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Finding the Fourth Proportional to 66,031.80, 98,982.90 and 59,033.40

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Solution

The fourth proportional to 66,031.80, 98,982.90 and 59,033.40 is: 88,492.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,031.80 : 98,982.90 = 59,033.40 : x
  2. Step 2: Convert to fraction form
    66,031.80/98,982.90 = 59,033.40/x
  3. Step 3: Cross multiply
    66,031.80x = 98,982.90 × 59,033.40
  4. Step 4: Simplify right side
    66,031.80x = 5,843,297,128.86
  5. Step 5: Solve for x
    x = 5,843,297,128.86/66,031.80
  6. Step 6: Final answer
    x = 88,492.17

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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.