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Finding the Fourth Proportional to 157,538.40, 236,480.40 and 98,440.80

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Solution

The fourth proportional to 157,538.40, 236,480.40 and 98,440.80 is: 147,769.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,538.40 : 236,480.40 = 98,440.80 : x
  2. Step 2: Convert to fraction form
    157,538.40/236,480.40 = 98,440.80/x
  3. Step 3: Cross multiply
    157,538.40x = 236,480.40 × 98,440.80
  4. Step 4: Simplify right side
    157,538.40x = 23,279,319,760.32
  5. Step 5: Solve for x
    x = 23,279,319,760.32/157,538.40
  6. Step 6: Final answer
    x = 147,769.18

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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.