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Finding the Fourth Proportional to 200,463.12, 300,695.76 and 60,220.80

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Solution

The fourth proportional to 200,463.12, 300,695.76 and 60,220.80 is: 90,331.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,463.12 : 300,695.76 = 60,220.80 : x
  2. Step 2: Convert to fraction form
    200,463.12/300,695.76 = 60,220.80/x
  3. Step 3: Cross multiply
    200,463.12x = 300,695.76 × 60,220.80
  4. Step 4: Simplify right side
    200,463.12x = 18,108,139,223.81
  5. Step 5: Solve for x
    x = 18,108,139,223.81/200,463.12
  6. Step 6: Final answer
    x = 90,331.52

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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.