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Finding the Fourth Proportional to 239,213.95, 358,482.63 and 132,644.86

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Solution

The fourth proportional to 239,213.95, 358,482.63 and 132,644.86 is: 198,779.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,213.95 : 358,482.63 = 132,644.86 : x
  2. Step 2: Convert to fraction form
    239,213.95/358,482.63 = 132,644.86/x
  3. Step 3: Cross multiply
    239,213.95x = 358,482.63 × 132,644.86
  4. Step 4: Simplify right side
    239,213.95x = 47,550,878,268.78
  5. Step 5: Solve for x
    x = 47,550,878,268.78/239,213.95
  6. Step 6: Final answer
    x = 198,779.70

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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.