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Finding the Fourth Proportional to 127,410.60, 190,853.10 and 74,660.20

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Solution

The fourth proportional to 127,410.60, 190,853.10 and 74,660.20 is: 111,836.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,410.60 : 190,853.10 = 74,660.20 : x
  2. Step 2: Convert to fraction form
    127,410.60/190,853.10 = 74,660.20/x
  3. Step 3: Cross multiply
    127,410.60x = 190,853.10 × 74,660.20
  4. Step 4: Simplify right side
    127,410.60x = 14,249,130,616.62
  5. Step 5: Solve for x
    x = 14,249,130,616.62/127,410.60
  6. Step 6: Final answer
    x = 111,836.30

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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.