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Finding the Fourth Proportional to 261,369.78, 360,557.42 and 170,778.75

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Solution

The fourth proportional to 261,369.78, 360,557.42 and 170,778.75 is: 235,587.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,369.78 : 360,557.42 = 170,778.75 : x
  2. Step 2: Convert to fraction form
    261,369.78/360,557.42 = 170,778.75/x
  3. Step 3: Cross multiply
    261,369.78x = 360,557.42 × 170,778.75
  4. Step 4: Simplify right side
    261,369.78x = 61,575,544,636.93
  5. Step 5: Solve for x
    x = 61,575,544,636.93/261,369.78
  6. Step 6: Final answer
    x = 235,587.85

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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.