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Finding the Fourth Proportional to 127,720.60, 191,580.90 and 44,603.80

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Solution

The fourth proportional to 127,720.60, 191,580.90 and 44,603.80 is: 66,905.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,720.60 : 191,580.90 = 44,603.80 : x
  2. Step 2: Convert to fraction form
    127,720.60/191,580.90 = 44,603.80/x
  3. Step 3: Cross multiply
    127,720.60x = 191,580.90 × 44,603.80
  4. Step 4: Simplify right side
    127,720.60x = 8,545,236,147.42
  5. Step 5: Solve for x
    x = 8,545,236,147.42/127,720.60
  6. Step 6: Final answer
    x = 66,905.70

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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.