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Finding the Fourth Proportional to 63,638.94, 87,820.47 and 35,343.66

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Solution

The fourth proportional to 63,638.94, 87,820.47 and 35,343.66 is: 48,773.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,638.94 : 87,820.47 = 35,343.66 : x
  2. Step 2: Convert to fraction form
    63,638.94/87,820.47 = 35,343.66/x
  3. Step 3: Cross multiply
    63,638.94x = 87,820.47 × 35,343.66
  4. Step 4: Simplify right side
    63,638.94x = 3,103,896,832.72
  5. Step 5: Solve for x
    x = 3,103,896,832.72/63,638.94
  6. Step 6: Final answer
    x = 48,773.55

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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.