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Finding the Fourth Proportional to 59,160.88, 88,742.70 and 19,721.20

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Solution

The fourth proportional to 59,160.88, 88,742.70 and 19,721.20 is: 29,582.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,160.88 : 88,742.70 = 19,721.20 : x
  2. Step 2: Convert to fraction form
    59,160.88/88,742.70 = 19,721.20/x
  3. Step 3: Cross multiply
    59,160.88x = 88,742.70 × 19,721.20
  4. Step 4: Simplify right side
    59,160.88x = 1,750,112,535.24
  5. Step 5: Solve for x
    x = 1,750,112,535.24/59,160.88
  6. Step 6: Final answer
    x = 29,582.26

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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.