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Finding the Fourth Proportional to 88,615.76, 132,943.40 and 25,430.96

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Solution

The fourth proportional to 88,615.76, 132,943.40 and 25,430.96 is: 38,152.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,615.76 : 132,943.40 = 25,430.96 : x
  2. Step 2: Convert to fraction form
    88,615.76/132,943.40 = 25,430.96/x
  3. Step 3: Cross multiply
    88,615.76x = 132,943.40 × 25,430.96
  4. Step 4: Simplify right side
    88,615.76x = 3,380,877,495.79
  5. Step 5: Solve for x
    x = 3,380,877,495.79/88,615.76
  6. Step 6: Final answer
    x = 38,152.10

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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.