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Finding the Fourth Proportional to 153,593.49, 211,959.99 and 85,614.77

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Solution

The fourth proportional to 153,593.49, 211,959.99 and 85,614.77 is: 118,148.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,593.49 : 211,959.99 = 85,614.77 : x
  2. Step 2: Convert to fraction form
    153,593.49/211,959.99 = 85,614.77/x
  3. Step 3: Cross multiply
    153,593.49x = 211,959.99 × 85,614.77
  4. Step 4: Simplify right side
    153,593.49x = 18,146,906,322.95
  5. Step 5: Solve for x
    x = 18,146,906,322.95/153,593.49
  6. Step 6: Final answer
    x = 118,148.93

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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.