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Finding the Fourth Proportional to 70,591.77, 105,864.17 and 28,460.97

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Solution

The fourth proportional to 70,591.77, 105,864.17 and 28,460.97 is: 42,681.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,591.77 : 105,864.17 = 28,460.97 : x
  2. Step 2: Convert to fraction form
    70,591.77/105,864.17 = 28,460.97/x
  3. Step 3: Cross multiply
    70,591.77x = 105,864.17 × 28,460.97
  4. Step 4: Simplify right side
    70,591.77x = 3,012,996,824.14
  5. Step 5: Solve for x
    x = 3,012,996,824.14/70,591.77
  6. Step 6: Final answer
    x = 42,681.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.