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Finding the Fourth Proportional to 482,634.20, 665,938.68 and 291,657.80

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Solution

The fourth proportional to 482,634.20, 665,938.68 and 291,657.80 is: 402,429.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,634.20 : 665,938.68 = 291,657.80 : x
  2. Step 2: Convert to fraction form
    482,634.20/665,938.68 = 291,657.80/x
  3. Step 3: Cross multiply
    482,634.20x = 665,938.68 × 291,657.80
  4. Step 4: Simplify right side
    482,634.20x = 194,226,210,343.70
  5. Step 5: Solve for x
    x = 194,226,210,343.70/482,634.20
  6. Step 6: Final answer
    x = 402,429.44

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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.