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Finding the Fourth Proportional to 922,763.70, 1,384,145.55 and 291,870.90

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Solution

The fourth proportional to 922,763.70, 1,384,145.55 and 291,870.90 is: 437,806.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,763.70 : 1,384,145.55 = 291,870.90 : x
  2. Step 2: Convert to fraction form
    922,763.70/1,384,145.55 = 291,870.90/x
  3. Step 3: Cross multiply
    922,763.70x = 1,384,145.55 × 291,870.90
  4. Step 4: Simplify right side
    922,763.70x = 403,991,807,409.50
  5. Step 5: Solve for x
    x = 403,991,807,409.50/922,763.70
  6. Step 6: Final answer
    x = 437,806.35

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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.