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Finding the Fourth Proportional to 393,841.60, 590,543.70 and 156,916.60

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Solution

The fourth proportional to 393,841.60, 590,543.70 and 156,916.60 is: 235,287.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,841.60 : 590,543.70 = 156,916.60 : x
  2. Step 2: Convert to fraction form
    393,841.60/590,543.70 = 156,916.60/x
  3. Step 3: Cross multiply
    393,841.60x = 590,543.70 × 156,916.60
  4. Step 4: Simplify right side
    393,841.60x = 92,666,109,555.42
  5. Step 5: Solve for x
    x = 92,666,109,555.42/393,841.60
  6. Step 6: Final answer
    x = 235,287.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.