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Finding the Fourth Proportional to 99,888.15, 149,831.82 and 47,334.54

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Solution

The fourth proportional to 99,888.15, 149,831.82 and 47,334.54 is: 71,001.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,888.15 : 149,831.82 = 47,334.54 : x
  2. Step 2: Convert to fraction form
    99,888.15/149,831.82 = 47,334.54/x
  3. Step 3: Cross multiply
    99,888.15x = 149,831.82 × 47,334.54
  4. Step 4: Simplify right side
    99,888.15x = 7,092,220,277.06
  5. Step 5: Solve for x
    x = 7,092,220,277.06/99,888.15
  6. Step 6: Final answer
    x = 71,001.62

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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.