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Finding the Fourth Proportional to 70,882.40, 106,323.60 and 49,685.60

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Solution

The fourth proportional to 70,882.40, 106,323.60 and 49,685.60 is: 74,528.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,882.40 : 106,323.60 = 49,685.60 : x
  2. Step 2: Convert to fraction form
    70,882.40/106,323.60 = 49,685.60/x
  3. Step 3: Cross multiply
    70,882.40x = 106,323.60 × 49,685.60
  4. Step 4: Simplify right side
    70,882.40x = 5,282,751,860.16
  5. Step 5: Solve for x
    x = 5,282,751,860.16/70,882.40
  6. Step 6: Final answer
    x = 74,528.40

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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.