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Finding the Fourth Proportional to 83,680.16, 115,475.52 and 45,952.16

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Solution

The fourth proportional to 83,680.16, 115,475.52 and 45,952.16 is: 63,412.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,680.16 : 115,475.52 = 45,952.16 : x
  2. Step 2: Convert to fraction form
    83,680.16/115,475.52 = 45,952.16/x
  3. Step 3: Cross multiply
    83,680.16x = 115,475.52 × 45,952.16
  4. Step 4: Simplify right side
    83,680.16x = 5,306,349,571.12
  5. Step 5: Solve for x
    x = 5,306,349,571.12/83,680.16
  6. Step 6: Final answer
    x = 63,412.28

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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.