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Finding the Fourth Proportional to 869,069.10, 1,303,603.65 and 513,900.30

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Solution

The fourth proportional to 869,069.10, 1,303,603.65 and 513,900.30 is: 770,850.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,069.10 : 1,303,603.65 = 513,900.30 : x
  2. Step 2: Convert to fraction form
    869,069.10/1,303,603.65 = 513,900.30/x
  3. Step 3: Cross multiply
    869,069.10x = 1,303,603.65 × 513,900.30
  4. Step 4: Simplify right side
    869,069.10x = 669,922,306,816.10
  5. Step 5: Solve for x
    x = 669,922,306,816.10/869,069.10
  6. Step 6: Final answer
    x = 770,850.45

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Half scale
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Double scale
Find fourth proportional to 869,070.10, 1,303,605.15 and 513,901.30
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.