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Finding the Fourth Proportional to 123,598.74, 170,575 and 69,884.28

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Solution

The fourth proportional to 123,598.74, 170,575 and 69,884.28 is: 96,445.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,598.74 : 170,575 = 69,884.28 : x
  2. Step 2: Convert to fraction form
    123,598.74/170,575 = 69,884.28/x
  3. Step 3: Cross multiply
    123,598.74x = 170,575 × 69,884.28
  4. Step 4: Simplify right side
    123,598.74x = 11,920,511,061
  5. Step 5: Solve for x
    x = 11,920,511,061/123,598.74
  6. Step 6: Final answer
    x = 96,445.25

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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.