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Finding the Fourth Proportional to 813,854.16, 1,123,121.16 and 451,303.56

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Solution

The fourth proportional to 813,854.16, 1,123,121.16 and 451,303.56 is: 622,800.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,854.16 : 1,123,121.16 = 451,303.56 : x
  2. Step 2: Convert to fraction form
    813,854.16/1,123,121.16 = 451,303.56/x
  3. Step 3: Cross multiply
    813,854.16x = 1,123,121.16 × 451,303.56
  4. Step 4: Simplify right side
    813,854.16x = 506,868,577,819.33
  5. Step 5: Solve for x
    x = 506,868,577,819.33/813,854.16
  6. Step 6: Final answer
    x = 622,800.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.