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Finding the Fourth Proportional to 88,657.25, 132,810.91 and 66,495.65

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Solution

The fourth proportional to 88,657.25, 132,810.91 and 66,495.65 is: 99,612.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,657.25 : 132,810.91 = 66,495.65 : x
  2. Step 2: Convert to fraction form
    88,657.25/132,810.91 = 66,495.65/x
  3. Step 3: Cross multiply
    88,657.25x = 132,810.91 × 66,495.65
  4. Step 4: Simplify right side
    88,657.25x = 8,831,346,957.25
  5. Step 5: Solve for x
    x = 8,831,346,957.25/88,657.25
  6. Step 6: Final answer
    x = 99,612.24

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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.