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Finding the Fourth Proportional to 39,718.90, 59,621.55 and 22,222.90

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Solution

The fourth proportional to 39,718.90, 59,621.55 and 22,222.90 is: 33,358.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,718.90 : 59,621.55 = 22,222.90 : x
  2. Step 2: Convert to fraction form
    39,718.90/59,621.55 = 22,222.90/x
  3. Step 3: Cross multiply
    39,718.90x = 59,621.55 × 22,222.90
  4. Step 4: Simplify right side
    39,718.90x = 1,324,963,743.50
  5. Step 5: Solve for x
    x = 1,324,963,743.50/39,718.90
  6. Step 6: Final answer
    x = 33,358.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.