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Finding the Fourth Proportional to 356,131.80, 533,421.28 and 178,328.68

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Solution

The fourth proportional to 356,131.80, 533,421.28 and 178,328.68 is: 267,104.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,131.80 : 533,421.28 = 178,328.68 : x
  2. Step 2: Convert to fraction form
    356,131.80/533,421.28 = 178,328.68/x
  3. Step 3: Cross multiply
    356,131.80x = 533,421.28 × 178,328.68
  4. Step 4: Simplify right side
    356,131.80x = 95,124,312,746.31
  5. Step 5: Solve for x
    x = 95,124,312,746.31/356,131.80
  6. Step 6: Final answer
    x = 267,104.24

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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.