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Finding the Fourth Proportional to 615,709.94, 849,211.98 and 529,812.78

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Solution

The fourth proportional to 615,709.94, 849,211.98 and 529,812.78 is: 730,739.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,709.94 : 849,211.98 = 529,812.78 : x
  2. Step 2: Convert to fraction form
    615,709.94/849,211.98 = 529,812.78/x
  3. Step 3: Cross multiply
    615,709.94x = 849,211.98 × 529,812.78
  4. Step 4: Simplify right side
    615,709.94x = 449,923,359,933.10
  5. Step 5: Solve for x
    x = 449,923,359,933.10/615,709.94
  6. Step 6: Final answer
    x = 730,739.15

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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.