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Finding the Fourth Proportional to 813,808, 1,123,068.56 and 451,247.16

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Solution

The fourth proportional to 813,808, 1,123,068.56 and 451,247.16 is: 622,728.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,808 : 1,123,068.56 = 451,247.16 : x
  2. Step 2: Convert to fraction form
    813,808/1,123,068.56 = 451,247.16/x
  3. Step 3: Cross multiply
    813,808x = 1,123,068.56 × 451,247.16
  4. Step 4: Simplify right side
    813,808x = 506,781,498,185.29
  5. Step 5: Solve for x
    x = 506,781,498,185.29/813,808
  6. Step 6: Final answer
    x = 622,728.58

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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.