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Finding the Fourth Proportional to 66,841.76, 92,363.28 and 63,602.72

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Solution

The fourth proportional to 66,841.76, 92,363.28 and 63,602.72 is: 87,887.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,841.76 : 92,363.28 = 63,602.72 : x
  2. Step 2: Convert to fraction form
    66,841.76/92,363.28 = 63,602.72/x
  3. Step 3: Cross multiply
    66,841.76x = 92,363.28 × 63,602.72
  4. Step 4: Simplify right side
    66,841.76x = 5,874,555,836.12
  5. Step 5: Solve for x
    x = 5,874,555,836.12/66,841.76
  6. Step 6: Final answer
    x = 87,887.51

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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.