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Finding the Fourth Proportional to 39,432.51, 59,139.86 and 11,352.51

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Solution

The fourth proportional to 39,432.51, 59,139.86 and 11,352.51 is: 17,026.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,432.51 : 59,139.86 = 11,352.51 : x
  2. Step 2: Convert to fraction form
    39,432.51/59,139.86 = 11,352.51/x
  3. Step 3: Cross multiply
    39,432.51x = 59,139.86 × 11,352.51
  4. Step 4: Simplify right side
    39,432.51x = 671,385,795.29
  5. Step 5: Solve for x
    x = 671,385,795.29/39,432.51
  6. Step 6: Final answer
    x = 17,026.20

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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.