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Finding the Fourth Proportional to 65,777.98, 98,691.66 and 39,501.58

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Solution

The fourth proportional to 65,777.98, 98,691.66 and 39,501.58 is: 59,267.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,777.98 : 98,691.66 = 39,501.58 : x
  2. Step 2: Convert to fraction form
    65,777.98/98,691.66 = 39,501.58/x
  3. Step 3: Cross multiply
    65,777.98x = 98,691.66 × 39,501.58
  4. Step 4: Simplify right side
    65,777.98x = 3,898,476,502.82
  5. Step 5: Solve for x
    x = 3,898,476,502.82/65,777.98
  6. Step 6: Final answer
    x = 59,267.20

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1.5x scale

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.