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Finding the Fourth Proportional to 193,498.72, 290,331.60 and 100,070.08

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Solution

The fourth proportional to 193,498.72, 290,331.60 and 100,070.08 is: 150,148.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,498.72 : 290,331.60 = 100,070.08 : x
  2. Step 2: Convert to fraction form
    193,498.72/290,331.60 = 100,070.08/x
  3. Step 3: Cross multiply
    193,498.72x = 290,331.60 × 100,070.08
  4. Step 4: Simplify right side
    193,498.72x = 29,053,506,438.53
  5. Step 5: Solve for x
    x = 29,053,506,438.53/193,498.72
  6. Step 6: Final answer
    x = 150,148.31

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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.