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Finding the Fourth Proportional to 127,805.70, 191,708.55 and 34,320.90

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Solution

The fourth proportional to 127,805.70, 191,708.55 and 34,320.90 is: 51,481.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,805.70 : 191,708.55 = 34,320.90 : x
  2. Step 2: Convert to fraction form
    127,805.70/191,708.55 = 34,320.90/x
  3. Step 3: Cross multiply
    127,805.70x = 191,708.55 × 34,320.90
  4. Step 4: Simplify right side
    127,805.70x = 6,579,609,973.70
  5. Step 5: Solve for x
    x = 6,579,609,973.70/127,805.70
  6. Step 6: Final answer
    x = 51,481.35

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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.