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Finding the Fourth Proportional to 125,929.92, 173,779.92 and 69,341.76

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Solution

The fourth proportional to 125,929.92, 173,779.92 and 69,341.76 is: 95,689.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,929.92 : 173,779.92 = 69,341.76 : x
  2. Step 2: Convert to fraction form
    125,929.92/173,779.92 = 69,341.76/x
  3. Step 3: Cross multiply
    125,929.92x = 173,779.92 × 69,341.76
  4. Step 4: Simplify right side
    125,929.92x = 12,050,205,505.46
  5. Step 5: Solve for x
    x = 12,050,205,505.46/125,929.92
  6. Step 6: Final answer
    x = 95,689.77

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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.