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Finding the Fourth Proportional to 153,593.48, 211,959.96 and 85,614.75

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Solution

The fourth proportional to 153,593.48, 211,959.96 and 85,614.75 is: 118,148.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,593.48 : 211,959.96 = 85,614.75 : x
  2. Step 2: Convert to fraction form
    153,593.48/211,959.96 = 85,614.75/x
  3. Step 3: Cross multiply
    153,593.48x = 211,959.96 × 85,614.75
  4. Step 4: Simplify right side
    153,593.48x = 18,146,898,985.41
  5. Step 5: Solve for x
    x = 18,146,898,985.41/153,593.48
  6. Step 6: Final answer
    x = 118,148.89

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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.