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Finding the Fourth Proportional to 869,124.70, 1,303,687.05 and 564,694.30

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Solution

The fourth proportional to 869,124.70, 1,303,687.05 and 564,694.30 is: 847,041.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,124.70 : 1,303,687.05 = 564,694.30 : x
  2. Step 2: Convert to fraction form
    869,124.70/1,303,687.05 = 564,694.30/x
  3. Step 3: Cross multiply
    869,124.70x = 1,303,687.05 × 564,694.30
  4. Step 4: Simplify right side
    869,124.70x = 736,184,646,118.82
  5. Step 5: Solve for x
    x = 736,184,646,118.82/869,124.70
  6. Step 6: Final answer
    x = 847,041.45

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Double scale
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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.