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Finding the Fourth Proportional to 127,887.60, 191,831.40 and 101,449.20

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Solution

The fourth proportional to 127,887.60, 191,831.40 and 101,449.20 is: 152,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,887.60 : 191,831.40 = 101,449.20 : x
  2. Step 2: Convert to fraction form
    127,887.60/191,831.40 = 101,449.20/x
  3. Step 3: Cross multiply
    127,887.60x = 191,831.40 × 101,449.20
  4. Step 4: Simplify right side
    127,887.60x = 19,461,142,064.88
  5. Step 5: Solve for x
    x = 19,461,142,064.88/127,887.60
  6. Step 6: Final answer
    x = 152,173.80

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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.