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Finding the Fourth Proportional to 261,176.01, 391,239.12 and 136,254.57

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Solution

The fourth proportional to 261,176.01, 391,239.12 and 136,254.57 is: 204,108.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,176.01 : 391,239.12 = 136,254.57 : x
  2. Step 2: Convert to fraction form
    261,176.01/391,239.12 = 136,254.57/x
  3. Step 3: Cross multiply
    261,176.01x = 391,239.12 × 136,254.57
  4. Step 4: Simplify right side
    261,176.01x = 53,308,118,062.78
  5. Step 5: Solve for x
    x = 53,308,118,062.78/261,176.01
  6. Step 6: Final answer
    x = 204,108.02

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1.5x scale

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.