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Finding the Fourth Proportional to 258,785.01, 357,126.17 and 142,511.54

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Solution

The fourth proportional to 258,785.01, 357,126.17 and 142,511.54 is: 196,667.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,785.01 : 357,126.17 = 142,511.54 : x
  2. Step 2: Convert to fraction form
    258,785.01/357,126.17 = 142,511.54/x
  3. Step 3: Cross multiply
    258,785.01x = 357,126.17 × 142,511.54
  4. Step 4: Simplify right side
    258,785.01x = 50,894,597,962.81
  5. Step 5: Solve for x
    x = 50,894,597,962.81/258,785.01
  6. Step 6: Final answer
    x = 196,667.49

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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.