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Finding the Fourth Proportional to 125,686.80, 173,443.36 and 69,097.76

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Solution

The fourth proportional to 125,686.80, 173,443.36 and 69,097.76 is: 95,352.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,686.80 : 173,443.36 = 69,097.76 : x
  2. Step 2: Convert to fraction form
    125,686.80/173,443.36 = 69,097.76/x
  3. Step 3: Cross multiply
    125,686.80x = 173,443.36 × 69,097.76
  4. Step 4: Simplify right side
    125,686.80x = 11,984,547,662.87
  5. Step 5: Solve for x
    x = 11,984,547,662.87/125,686.80
  6. Step 6: Final answer
    x = 95,352.48

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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.