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Finding the Fourth Proportional to 61,805.48, 85,280.99 and 34,947.40

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Solution

The fourth proportional to 61,805.48, 85,280.99 and 34,947.40 is: 48,221.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,805.48 : 85,280.99 = 34,947.40 : x
  2. Step 2: Convert to fraction form
    61,805.48/85,280.99 = 34,947.40/x
  3. Step 3: Cross multiply
    61,805.48x = 85,280.99 × 34,947.40
  4. Step 4: Simplify right side
    61,805.48x = 2,980,348,744.09
  5. Step 5: Solve for x
    x = 2,980,348,744.09/61,805.48
  6. Step 6: Final answer
    x = 48,221.43

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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.