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Finding the Fourth Proportional to 266,005.60, 398,662.80 and 192,047.20

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Solution

The fourth proportional to 266,005.60, 398,662.80 and 192,047.20 is: 287,821.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,005.60 : 398,662.80 = 192,047.20 : x
  2. Step 2: Convert to fraction form
    266,005.60/398,662.80 = 192,047.20/x
  3. Step 3: Cross multiply
    266,005.60x = 398,662.80 × 192,047.20
  4. Step 4: Simplify right side
    266,005.60x = 76,562,074,484.16
  5. Step 5: Solve for x
    x = 76,562,074,484.16/266,005.60
  6. Step 6: Final answer
    x = 287,821.29

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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.