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Finding the Fourth Proportional to 356,187.42, 534,339.54 and 169,135.74

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Solution

The fourth proportional to 356,187.42, 534,339.54 and 169,135.74 is: 253,731.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,187.42 : 534,339.54 = 169,135.74 : x
  2. Step 2: Convert to fraction form
    356,187.42/534,339.54 = 169,135.74/x
  3. Step 3: Cross multiply
    356,187.42x = 534,339.54 × 169,135.74
  4. Step 4: Simplify right side
    356,187.42x = 90,375,913,509.16
  5. Step 5: Solve for x
    x = 90,375,913,509.16/356,187.42
  6. Step 6: Final answer
    x = 253,731.35

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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.