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Finding the Fourth Proportional to 189,259.01, 261,177.67 and 103,218.13

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Solution

The fourth proportional to 189,259.01, 261,177.67 and 103,218.13 is: 142,441.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,259.01 : 261,177.67 = 103,218.13 : x
  2. Step 2: Convert to fraction form
    189,259.01/261,177.67 = 103,218.13/x
  3. Step 3: Cross multiply
    189,259.01x = 261,177.67 × 103,218.13
  4. Step 4: Simplify right side
    189,259.01x = 26,958,270,695.16
  5. Step 5: Solve for x
    x = 26,958,270,695.16/189,259.01
  6. Step 6: Final answer
    x = 142,441.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.