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Finding the Fourth Proportional to 261,066.78, 360,279.50 and 147,889.53

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Solution

The fourth proportional to 261,066.78, 360,279.50 and 147,889.53 is: 204,091.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,066.78 : 360,279.50 = 147,889.53 : x
  2. Step 2: Convert to fraction form
    261,066.78/360,279.50 = 147,889.53/x
  3. Step 3: Cross multiply
    261,066.78x = 360,279.50 × 147,889.53
  4. Step 4: Simplify right side
    261,066.78x = 53,281,565,184.19
  5. Step 5: Solve for x
    x = 53,281,565,184.19/261,066.78
  6. Step 6: Final answer
    x = 204,091.71

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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.