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Finding the Fourth Proportional to 63,012.94, 86,959.68 and 34,720.45

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Solution

The fourth proportional to 63,012.94, 86,959.68 and 34,720.45 is: 47,915.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,012.94 : 86,959.68 = 34,720.45 : x
  2. Step 2: Convert to fraction form
    63,012.94/86,959.68 = 34,720.45/x
  3. Step 3: Cross multiply
    63,012.94x = 86,959.68 × 34,720.45
  4. Step 4: Simplify right side
    63,012.94x = 3,019,278,873.86
  5. Step 5: Solve for x
    x = 3,019,278,873.86/63,012.94
  6. Step 6: Final answer
    x = 47,915.22

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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.