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Finding the Fourth Proportional to 60,718.50, 83,781.60 and 33,860.32

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Solution

The fourth proportional to 60,718.50, 83,781.60 and 33,860.32 is: 46,721.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,718.50 : 83,781.60 = 33,860.32 : x
  2. Step 2: Convert to fraction form
    60,718.50/83,781.60 = 33,860.32/x
  3. Step 3: Cross multiply
    60,718.50x = 83,781.60 × 33,860.32
  4. Step 4: Simplify right side
    60,718.50x = 2,836,871,786.11
  5. Step 5: Solve for x
    x = 2,836,871,786.11/60,718.50
  6. Step 6: Final answer
    x = 46,721.70

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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.