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Finding the Fourth Proportional to 112,259.86, 154,918.28 and 61,958.50

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Solution

The fourth proportional to 112,259.86, 154,918.28 and 61,958.50 is: 85,502.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,259.86 : 154,918.28 = 61,958.50 : x
  2. Step 2: Convert to fraction form
    112,259.86/154,918.28 = 61,958.50/x
  3. Step 3: Cross multiply
    112,259.86x = 154,918.28 × 61,958.50
  4. Step 4: Simplify right side
    112,259.86x = 9,598,504,251.38
  5. Step 5: Solve for x
    x = 9,598,504,251.38/112,259.86
  6. Step 6: Final answer
    x = 85,502.55

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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.