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Finding the Fourth Proportional to 240,689.80, 361,034.70 and 170,705.80

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Solution

The fourth proportional to 240,689.80, 361,034.70 and 170,705.80 is: 256,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,689.80 : 361,034.70 = 170,705.80 : x
  2. Step 2: Convert to fraction form
    240,689.80/361,034.70 = 170,705.80/x
  3. Step 3: Cross multiply
    240,689.80x = 361,034.70 × 170,705.80
  4. Step 4: Simplify right side
    240,689.80x = 61,630,717,291.26
  5. Step 5: Solve for x
    x = 61,630,717,291.26/240,689.80
  6. Step 6: Final answer
    x = 256,058.70

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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.