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Finding the Fourth Proportional to 65,924.60, 99,117.30 and 64,542.20

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Solution

The fourth proportional to 65,924.60, 99,117.30 and 64,542.20 is: 97,038.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,924.60 : 99,117.30 = 64,542.20 : x
  2. Step 2: Convert to fraction form
    65,924.60/99,117.30 = 64,542.20/x
  3. Step 3: Cross multiply
    65,924.60x = 99,117.30 × 64,542.20
  4. Step 4: Simplify right side
    65,924.60x = 6,397,248,600.06
  5. Step 5: Solve for x
    x = 6,397,248,600.06/65,924.60
  6. Step 6: Final answer
    x = 97,038.87

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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.