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Finding the Fourth Proportional to 86,565.72, 129,867.36 and 26,594.40

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Solution

The fourth proportional to 86,565.72, 129,867.36 and 26,594.40 is: 39,897.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,565.72 : 129,867.36 = 26,594.40 : x
  2. Step 2: Convert to fraction form
    86,565.72/129,867.36 = 26,594.40/x
  3. Step 3: Cross multiply
    86,565.72x = 129,867.36 × 26,594.40
  4. Step 4: Simplify right side
    86,565.72x = 3,453,744,518.78
  5. Step 5: Solve for x
    x = 3,453,744,518.78/86,565.72
  6. Step 6: Final answer
    x = 39,897.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.