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Finding the Fourth Proportional to 663,686.60, 915,941.94 and 377,296.52

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Solution

The fourth proportional to 663,686.60, 915,941.94 and 377,296.52 is: 520,700.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,686.60 : 915,941.94 = 377,296.52 : x
  2. Step 2: Convert to fraction form
    663,686.60/915,941.94 = 377,296.52/x
  3. Step 3: Cross multiply
    663,686.60x = 915,941.94 × 377,296.52
  4. Step 4: Simplify right side
    663,686.60x = 345,581,706,484.05
  5. Step 5: Solve for x
    x = 345,581,706,484.05/663,686.60
  6. Step 6: Final answer
    x = 520,700.14

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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.