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Finding the Fourth Proportional to 125,053.12, 187,581.72 and 87,671.82

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Solution

The fourth proportional to 125,053.12, 187,581.72 and 87,671.82 is: 131,509.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,053.12 : 187,581.72 = 87,671.82 : x
  2. Step 2: Convert to fraction form
    125,053.12/187,581.72 = 87,671.82/x
  3. Step 3: Cross multiply
    125,053.12x = 187,581.72 × 87,671.82
  4. Step 4: Simplify right side
    125,053.12x = 16,445,630,768.18
  5. Step 5: Solve for x
    x = 16,445,630,768.18/125,053.12
  6. Step 6: Final answer
    x = 131,509.16

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.