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Finding the Fourth Proportional to 141,641.48, 212,485.08 and 57,406.88

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Solution

The fourth proportional to 141,641.48, 212,485.08 and 57,406.88 is: 86,119.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,641.48 : 212,485.08 = 57,406.88 : x
  2. Step 2: Convert to fraction form
    141,641.48/212,485.08 = 57,406.88/x
  3. Step 3: Cross multiply
    141,641.48x = 212,485.08 × 57,406.88
  4. Step 4: Simplify right side
    141,641.48x = 12,198,105,489.35
  5. Step 5: Solve for x
    x = 12,198,105,489.35/141,641.48
  6. Step 6: Final answer
    x = 86,119.59

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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.