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Finding the Fourth Proportional to 169,720.71, 234,218.28 and 93,240.78

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Solution

The fourth proportional to 169,720.71, 234,218.28 and 93,240.78 is: 128,674.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,720.71 : 234,218.28 = 93,240.78 : x
  2. Step 2: Convert to fraction form
    169,720.71/234,218.28 = 93,240.78/x
  3. Step 3: Cross multiply
    169,720.71x = 234,218.28 × 93,240.78
  4. Step 4: Simplify right side
    169,720.71x = 21,838,695,117.46
  5. Step 5: Solve for x
    x = 21,838,695,117.46/169,720.71
  6. Step 6: Final answer
    x = 128,674.31

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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.