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Finding the Fourth Proportional to 61,603.92, 85,031.59 and 36,115.80

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Solution

The fourth proportional to 61,603.92, 85,031.59 and 36,115.80 is: 49,850.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,603.92 : 85,031.59 = 36,115.80 : x
  2. Step 2: Convert to fraction form
    61,603.92/85,031.59 = 36,115.80/x
  3. Step 3: Cross multiply
    61,603.92x = 85,031.59 × 36,115.80
  4. Step 4: Simplify right side
    61,603.92x = 3,070,983,643.47
  5. Step 5: Solve for x
    x = 3,070,983,643.47/61,603.92
  6. Step 6: Final answer
    x = 49,850.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.