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Finding the Fourth Proportional to 157,035.66, 216,616.86 and 98,799.78

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Solution

The fourth proportional to 157,035.66, 216,616.86 and 98,799.78 is: 136,285.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,035.66 : 216,616.86 = 98,799.78 : x
  2. Step 2: Convert to fraction form
    157,035.66/216,616.86 = 98,799.78/x
  3. Step 3: Cross multiply
    157,035.66x = 216,616.86 × 98,799.78
  4. Step 4: Simplify right side
    157,035.66x = 21,401,698,112.29
  5. Step 5: Solve for x
    x = 21,401,698,112.29/157,035.66
  6. Step 6: Final answer
    x = 136,285.59

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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.