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Finding the Fourth Proportional to 156,482.32, 215,862.96 and 96,064.96

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Solution

The fourth proportional to 156,482.32, 215,862.96 and 96,064.96 is: 132,518.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,482.32 : 215,862.96 = 96,064.96 : x
  2. Step 2: Convert to fraction form
    156,482.32/215,862.96 = 96,064.96/x
  3. Step 3: Cross multiply
    156,482.32x = 215,862.96 × 96,064.96
  4. Step 4: Simplify right side
    156,482.32x = 20,736,866,617.88
  5. Step 5: Solve for x
    x = 20,736,866,617.88/156,482.32
  6. Step 6: Final answer
    x = 132,518.91

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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.