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Finding the Fourth Proportional to 176,931.60, 265,429.80 and 71,761.20

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Solution

The fourth proportional to 176,931.60, 265,429.80 and 71,761.20 is: 107,654.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,931.60 : 265,429.80 = 71,761.20 : x
  2. Step 2: Convert to fraction form
    176,931.60/265,429.80 = 71,761.20/x
  3. Step 3: Cross multiply
    176,931.60x = 265,429.80 × 71,761.20
  4. Step 4: Simplify right side
    176,931.60x = 19,047,560,963.76
  5. Step 5: Solve for x
    x = 19,047,560,963.76/176,931.60
  6. Step 6: Final answer
    x = 107,654.94

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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.