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Finding the Fourth Proportional to 68,990.02, 95,203.53 and 38,776.66

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Solution

The fourth proportional to 68,990.02, 95,203.53 and 38,776.66 is: 53,510.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,990.02 : 95,203.53 = 38,776.66 : x
  2. Step 2: Convert to fraction form
    68,990.02/95,203.53 = 38,776.66/x
  3. Step 3: Cross multiply
    68,990.02x = 95,203.53 × 38,776.66
  4. Step 4: Simplify right side
    68,990.02x = 3,691,674,913.61
  5. Step 5: Solve for x
    x = 3,691,674,913.61/68,990.02
  6. Step 6: Final answer
    x = 53,510.27

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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.