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Finding the Fourth Proportional to 88,643.79, 133,015.37 and 47,089.71

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Solution

The fourth proportional to 88,643.79, 133,015.37 and 47,089.71 is: 70,660.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,643.79 : 133,015.37 = 47,089.71 : x
  2. Step 2: Convert to fraction form
    88,643.79/133,015.37 = 47,089.71/x
  3. Step 3: Cross multiply
    88,643.79x = 133,015.37 × 47,089.71
  4. Step 4: Simplify right side
    88,643.79x = 6,263,654,963.39
  5. Step 5: Solve for x
    x = 6,263,654,963.39/88,643.79
  6. Step 6: Final answer
    x = 70,660.96

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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.