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Finding the Fourth Proportional to 693,781.52, 957,437.16 and 391,969.04

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Solution

The fourth proportional to 693,781.52, 957,437.16 and 391,969.04 is: 540,927.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,781.52 : 957,437.16 = 391,969.04 : x
  2. Step 2: Convert to fraction form
    693,781.52/957,437.16 = 391,969.04/x
  3. Step 3: Cross multiply
    693,781.52x = 957,437.16 × 391,969.04
  4. Step 4: Simplify right side
    693,781.52x = 375,285,724,465.53
  5. Step 5: Solve for x
    x = 375,285,724,465.53/693,781.52
  6. Step 6: Final answer
    x = 540,927.82

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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.