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Finding the Fourth Proportional to 101,125.86, 139,581.45 and 58,698.06

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Solution

The fourth proportional to 101,125.86, 139,581.45 and 58,698.06 is: 81,019.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,125.86 : 139,581.45 = 58,698.06 : x
  2. Step 2: Convert to fraction form
    101,125.86/139,581.45 = 58,698.06/x
  3. Step 3: Cross multiply
    101,125.86x = 139,581.45 × 58,698.06
  4. Step 4: Simplify right side
    101,125.86x = 8,193,160,326.99
  5. Step 5: Solve for x
    x = 8,193,160,326.99/101,125.86
  6. Step 6: Final answer
    x = 81,019.44

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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.