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Finding the Fourth Proportional to 354,557.70, 531,885.15 and 117,875.70

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Solution

The fourth proportional to 354,557.70, 531,885.15 and 117,875.70 is: 176,829.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,557.70 : 531,885.15 = 117,875.70 : x
  2. Step 2: Convert to fraction form
    354,557.70/531,885.15 = 117,875.70/x
  3. Step 3: Cross multiply
    354,557.70x = 531,885.15 × 117,875.70
  4. Step 4: Simplify right side
    354,557.70x = 62,696,334,375.86
  5. Step 5: Solve for x
    x = 62,696,334,375.86/354,557.70
  6. Step 6: Final answer
    x = 176,829.71

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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.