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Finding the Fourth Proportional to 86,058.77, 129,043.58 and 38,633.01

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Solution

The fourth proportional to 86,058.77, 129,043.58 and 38,633.01 is: 57,929.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,058.77 : 129,043.58 = 38,633.01 : x
  2. Step 2: Convert to fraction form
    86,058.77/129,043.58 = 38,633.01/x
  3. Step 3: Cross multiply
    86,058.77x = 129,043.58 × 38,633.01
  4. Step 4: Simplify right side
    86,058.77x = 4,985,342,013.16
  5. Step 5: Solve for x
    x = 4,985,342,013.16/86,058.77
  6. Step 6: Final answer
    x = 57,929.50

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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.