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Finding the Fourth Proportional to 266,688.48, 400,028.50 and 67,009.00

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Solution

The fourth proportional to 266,688.48, 400,028.50 and 67,009.00 is: 100,512.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,688.48 : 400,028.50 = 67,009.00 : x
  2. Step 2: Convert to fraction form
    266,688.48/400,028.50 = 67,009.00/x
  3. Step 3: Cross multiply
    266,688.48x = 400,028.50 × 67,009.00
  4. Step 4: Simplify right side
    266,688.48x = 26,805,508,276.70
  5. Step 5: Solve for x
    x = 26,805,508,276.70/266,688.48
  6. Step 6: Final answer
    x = 100,512.44

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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.