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Finding the Fourth Proportional to 132,612.57, 183,009.20 and 72,187.11

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Solution

The fourth proportional to 132,612.57, 183,009.20 and 72,187.11 is: 99,620.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,612.57 : 183,009.20 = 72,187.11 : x
  2. Step 2: Convert to fraction form
    132,612.57/183,009.20 = 72,187.11/x
  3. Step 3: Cross multiply
    132,612.57x = 183,009.20 × 72,187.11
  4. Step 4: Simplify right side
    132,612.57x = 13,210,904,890.48
  5. Step 5: Solve for x
    x = 13,210,904,890.48/132,612.57
  6. Step 6: Final answer
    x = 99,620.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.