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Finding the Fourth Proportional to 170,640.80, 256,058.40 and 65,535.20

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Solution

The fourth proportional to 170,640.80, 256,058.40 and 65,535.20 is: 98,340.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,640.80 : 256,058.40 = 65,535.20 : x
  2. Step 2: Convert to fraction form
    170,640.80/256,058.40 = 65,535.20/x
  3. Step 3: Cross multiply
    170,640.80x = 256,058.40 × 65,535.20
  4. Step 4: Simplify right side
    170,640.80x = 16,780,838,455.68
  5. Step 5: Solve for x
    x = 16,780,838,455.68/170,640.80
  6. Step 6: Final answer
    x = 98,340.13

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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.