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Finding the Fourth Proportional to 127,289.60, 191,138.40 and 101,211.20

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Solution

The fourth proportional to 127,289.60, 191,138.40 and 101,211.20 is: 151,979.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,289.60 : 191,138.40 = 101,211.20 : x
  2. Step 2: Convert to fraction form
    127,289.60/191,138.40 = 101,211.20/x
  3. Step 3: Cross multiply
    127,289.60x = 191,138.40 × 101,211.20
  4. Step 4: Simplify right side
    127,289.60x = 19,345,346,830.08
  5. Step 5: Solve for x
    x = 19,345,346,830.08/127,289.60
  6. Step 6: Final answer
    x = 151,979.01

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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.