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Finding the Fourth Proportional to 58,690.80, 87,901.20 and 48,193.20

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Solution

The fourth proportional to 58,690.80, 87,901.20 and 48,193.20 is: 72,178.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,690.80 : 87,901.20 = 48,193.20 : x
  2. Step 2: Convert to fraction form
    58,690.80/87,901.20 = 48,193.20/x
  3. Step 3: Cross multiply
    58,690.80x = 87,901.20 × 48,193.20
  4. Step 4: Simplify right side
    58,690.80x = 4,236,240,111.84
  5. Step 5: Solve for x
    x = 4,236,240,111.84/58,690.80
  6. Step 6: Final answer
    x = 72,178.95

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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.