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Finding the Fourth Proportional to 70,809.17, 106,635.63 and 63,869.09

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Solution

The fourth proportional to 70,809.17, 106,635.63 and 63,869.09 is: 96,184.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,809.17 : 106,635.63 = 63,869.09 : x
  2. Step 2: Convert to fraction form
    70,809.17/106,635.63 = 63,869.09/x
  3. Step 3: Cross multiply
    70,809.17x = 106,635.63 × 63,869.09
  4. Step 4: Simplify right side
    70,809.17x = 6,810,720,356.01
  5. Step 5: Solve for x
    x = 6,810,720,356.01/70,809.17
  6. Step 6: Final answer
    x = 96,184.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.