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Finding the Fourth Proportional to 125,290.53, 172,898.82 and 70,841.81

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Solution

The fourth proportional to 125,290.53, 172,898.82 and 70,841.81 is: 97,760.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,290.53 : 172,898.82 = 70,841.81 : x
  2. Step 2: Convert to fraction form
    125,290.53/172,898.82 = 70,841.81/x
  3. Step 3: Cross multiply
    125,290.53x = 172,898.82 × 70,841.81
  4. Step 4: Simplify right side
    125,290.53x = 12,248,465,787.91
  5. Step 5: Solve for x
    x = 12,248,465,787.91/125,290.53
  6. Step 6: Final answer
    x = 97,760.51

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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.