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Finding the Fourth Proportional to 74,797.39, 103,220.39 and 42,966.28

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Solution

The fourth proportional to 74,797.39, 103,220.39 and 42,966.28 is: 59,293.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,797.39 : 103,220.39 = 42,966.28 : x
  2. Step 2: Convert to fraction form
    74,797.39/103,220.39 = 42,966.28/x
  3. Step 3: Cross multiply
    74,797.39x = 103,220.39 × 42,966.28
  4. Step 4: Simplify right side
    74,797.39x = 4,434,995,447.52
  5. Step 5: Solve for x
    x = 4,434,995,447.52/74,797.39
  6. Step 6: Final answer
    x = 59,293.46

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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.