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Finding the Fourth Proportional to 50,987.61, 70,421.78 and 33,963.81

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Solution

The fourth proportional to 50,987.61, 70,421.78 and 33,963.81 is: 46,909.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,987.61 : 70,421.78 = 33,963.81 : x
  2. Step 2: Convert to fraction form
    50,987.61/70,421.78 = 33,963.81/x
  3. Step 3: Cross multiply
    50,987.61x = 70,421.78 × 33,963.81
  4. Step 4: Simplify right side
    50,987.61x = 2,391,791,785.96
  5. Step 5: Solve for x
    x = 2,391,791,785.96/50,987.61
  6. Step 6: Final answer
    x = 46,909.27

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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.