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Finding the Fourth Proportional to 570,575.78, 855,862.85 and 171,215.90

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Solution

The fourth proportional to 570,575.78, 855,862.85 and 171,215.90 is: 256,823.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,575.78 : 855,862.85 = 171,215.90 : x
  2. Step 2: Convert to fraction form
    570,575.78/855,862.85 = 171,215.90/x
  3. Step 3: Cross multiply
    570,575.78x = 855,862.85 × 171,215.90
  4. Step 4: Simplify right side
    570,575.78x = 146,537,324,288.04
  5. Step 5: Solve for x
    x = 146,537,324,288.04/570,575.78
  6. Step 6: Final answer
    x = 256,823.60

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1.5x scale

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.