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Finding the Fourth Proportional to 153,014.91, 211,147.13 and 85,027.57

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Solution

The fourth proportional to 153,014.91, 211,147.13 and 85,027.57 is: 117,330.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,014.91 : 211,147.13 = 85,027.57 : x
  2. Step 2: Convert to fraction form
    153,014.91/211,147.13 = 85,027.57/x
  3. Step 3: Cross multiply
    153,014.91x = 211,147.13 × 85,027.57
  4. Step 4: Simplify right side
    153,014.91x = 17,953,326,951.24
  5. Step 5: Solve for x
    x = 17,953,326,951.24/153,014.91
  6. Step 6: Final answer
    x = 117,330.58

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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.