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Finding the Fourth Proportional to 62,803.11, 86,670.90 and 34,509

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Solution

The fourth proportional to 62,803.11, 86,670.90 and 34,509 is: 47,623.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,803.11 : 86,670.90 = 34,509 : x
  2. Step 2: Convert to fraction form
    62,803.11/86,670.90 = 34,509/x
  3. Step 3: Cross multiply
    62,803.11x = 86,670.90 × 34,509
  4. Step 4: Simplify right side
    62,803.11x = 2,990,926,088.10
  5. Step 5: Solve for x
    x = 2,990,926,088.10/62,803.11
  6. Step 6: Final answer
    x = 47,623.85

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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.