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Finding the Fourth Proportional to 66,602.80, 99,418.34 and 58,195.16

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Solution

The fourth proportional to 66,602.80, 99,418.34 and 58,195.16 is: 86,868.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,602.80 : 99,418.34 = 58,195.16 : x
  2. Step 2: Convert to fraction form
    66,602.80/99,418.34 = 58,195.16/x
  3. Step 3: Cross multiply
    66,602.80x = 99,418.34 × 58,195.16
  4. Step 4: Simplify right side
    66,602.80x = 5,785,665,415.17
  5. Step 5: Solve for x
    x = 5,785,665,415.17/66,602.80
  6. Step 6: Final answer
    x = 86,868.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.