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Finding the Fourth Proportional to 125,957.66, 173,808.72 and 77,551.91

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Solution

The fourth proportional to 125,957.66, 173,808.72 and 77,551.91 is: 107,013.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,957.66 : 173,808.72 = 77,551.91 : x
  2. Step 2: Convert to fraction form
    125,957.66/173,808.72 = 77,551.91/x
  3. Step 3: Cross multiply
    125,957.66x = 173,808.72 × 77,551.91
  4. Step 4: Simplify right side
    125,957.66x = 13,479,197,993.39
  5. Step 5: Solve for x
    x = 13,479,197,993.39/125,957.66
  6. Step 6: Final answer
    x = 107,013.72

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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.