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Finding the Fourth Proportional to 178,642.80, 267,965.64 and 64,871.04

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Solution

The fourth proportional to 178,642.80, 267,965.64 and 64,871.04 is: 97,307.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,642.80 : 267,965.64 = 64,871.04 : x
  2. Step 2: Convert to fraction form
    178,642.80/267,965.64 = 64,871.04/x
  3. Step 3: Cross multiply
    178,642.80x = 267,965.64 × 64,871.04
  4. Step 4: Simplify right side
    178,642.80x = 17,383,209,751.07
  5. Step 5: Solve for x
    x = 17,383,209,751.07/178,642.80
  6. Step 6: Final answer
    x = 97,307.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.