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Finding the Fourth Proportional to 127,967.40, 191,951.10 and 39,220.20

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Solution

The fourth proportional to 127,967.40, 191,951.10 and 39,220.20 is: 58,830.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,967.40 : 191,951.10 = 39,220.20 : x
  2. Step 2: Convert to fraction form
    127,967.40/191,951.10 = 39,220.20/x
  3. Step 3: Cross multiply
    127,967.40x = 191,951.10 × 39,220.20
  4. Step 4: Simplify right side
    127,967.40x = 7,528,360,532.22
  5. Step 5: Solve for x
    x = 7,528,360,532.22/127,967.40
  6. Step 6: Final answer
    x = 58,830.30

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Similar ratio
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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.