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Finding the Fourth Proportional to 88,643.53, 132,273.91 and 79,090.17

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Solution

The fourth proportional to 88,643.53, 132,273.91 and 79,090.17 is: 118,018.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,643.53 : 132,273.91 = 79,090.17 : x
  2. Step 2: Convert to fraction form
    88,643.53/132,273.91 = 79,090.17/x
  3. Step 3: Cross multiply
    88,643.53x = 132,273.91 × 79,090.17
  4. Step 4: Simplify right side
    88,643.53x = 10,461,566,028.46
  5. Step 5: Solve for x
    x = 10,461,566,028.46/88,643.53
  6. Step 6: Final answer
    x = 118,018.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.