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Finding the Fourth Proportional to 107,058.78, 147,739.11 and 59,311.08

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Solution

The fourth proportional to 107,058.78, 147,739.11 and 59,311.08 is: 81,848.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,058.78 : 147,739.11 = 59,311.08 : x
  2. Step 2: Convert to fraction form
    107,058.78/147,739.11 = 59,311.08/x
  3. Step 3: Cross multiply
    107,058.78x = 147,739.11 × 59,311.08
  4. Step 4: Simplify right side
    107,058.78x = 8,762,566,172.34
  5. Step 5: Solve for x
    x = 8,762,566,172.34/107,058.78
  6. Step 6: Final answer
    x = 81,848.18

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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.