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Finding the Fourth Proportional to 238,221.80, 357,332.70 and 127,629.80

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Solution

The fourth proportional to 238,221.80, 357,332.70 and 127,629.80 is: 191,444.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,221.80 : 357,332.70 = 127,629.80 : x
  2. Step 2: Convert to fraction form
    238,221.80/357,332.70 = 127,629.80/x
  3. Step 3: Cross multiply
    238,221.80x = 357,332.70 × 127,629.80
  4. Step 4: Simplify right side
    238,221.80x = 45,606,301,034.46
  5. Step 5: Solve for x
    x = 45,606,301,034.46/238,221.80
  6. Step 6: Final answer
    x = 191,444.70

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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.