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Finding the Fourth Proportional to 99,765.84, 149,648.44 and 40,587.52

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Solution

The fourth proportional to 99,765.84, 149,648.44 and 40,587.52 is: 60,881.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,765.84 : 149,648.44 = 40,587.52 : x
  2. Step 2: Convert to fraction form
    99,765.84/149,648.44 = 40,587.52/x
  3. Step 3: Cross multiply
    99,765.84x = 149,648.44 × 40,587.52
  4. Step 4: Simplify right side
    99,765.84x = 6,073,859,051.47
  5. Step 5: Solve for x
    x = 6,073,859,051.47/99,765.84
  6. Step 6: Final answer
    x = 60,881.15

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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.