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Finding the Fourth Proportional to 127,657.59, 191,514.81 and 38,918.00

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Solution

The fourth proportional to 127,657.59, 191,514.81 and 38,918.00 is: 58,385.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,657.59 : 191,514.81 = 38,918.00 : x
  2. Step 2: Convert to fraction form
    127,657.59/191,514.81 = 38,918.00/x
  3. Step 3: Cross multiply
    127,657.59x = 191,514.81 × 38,918.00
  4. Step 4: Simplify right side
    127,657.59x = 7,453,372,418.01
  5. Step 5: Solve for x
    x = 7,453,372,418.01/127,657.59
  6. Step 6: Final answer
    x = 58,385.66

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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.