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Finding the Fourth Proportional to 107,859.20, 161,884.80 and 63,430.40

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Solution

The fourth proportional to 107,859.20, 161,884.80 and 63,430.40 is: 95,202.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,859.20 : 161,884.80 = 63,430.40 : x
  2. Step 2: Convert to fraction form
    107,859.20/161,884.80 = 63,430.40/x
  3. Step 3: Cross multiply
    107,859.20x = 161,884.80 × 63,430.40
  4. Step 4: Simplify right side
    107,859.20x = 10,268,417,617.92
  5. Step 5: Solve for x
    x = 10,268,417,617.92/107,859.20
  6. Step 6: Final answer
    x = 95,202.06

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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.