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Finding the Fourth Proportional to 261,398.76, 360,605.70 and 189,621.48

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Solution

The fourth proportional to 261,398.76, 360,605.70 and 189,621.48 is: 261,587.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,398.76 : 360,605.70 = 189,621.48 : x
  2. Step 2: Convert to fraction form
    261,398.76/360,605.70 = 189,621.48/x
  3. Step 3: Cross multiply
    261,398.76x = 360,605.70 × 189,621.48
  4. Step 4: Simplify right side
    261,398.76x = 68,378,586,530.44
  5. Step 5: Solve for x
    x = 68,378,586,530.44/261,398.76
  6. Step 6: Final answer
    x = 261,587.26

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1.5x scale

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.