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Finding the Fourth Proportional to 125,023.24, 172,477.06 and 74,693

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Solution

The fourth proportional to 125,023.24, 172,477.06 and 74,693 is: 103,043.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,023.24 : 172,477.06 = 74,693 : x
  2. Step 2: Convert to fraction form
    125,023.24/172,477.06 = 74,693/x
  3. Step 3: Cross multiply
    125,023.24x = 172,477.06 × 74,693
  4. Step 4: Simplify right side
    125,023.24x = 12,882,829,042.58
  5. Step 5: Solve for x
    x = 12,882,829,042.58/125,023.24
  6. Step 6: Final answer
    x = 103,043.47

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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.