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Finding the Fourth Proportional to 74,065.60, 111,098.40 and 49,133.80

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Solution

The fourth proportional to 74,065.60, 111,098.40 and 49,133.80 is: 73,700.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,065.60 : 111,098.40 = 49,133.80 : x
  2. Step 2: Convert to fraction form
    74,065.60/111,098.40 = 49,133.80/x
  3. Step 3: Cross multiply
    74,065.60x = 111,098.40 × 49,133.80
  4. Step 4: Simplify right side
    74,065.60x = 5,458,686,565.92
  5. Step 5: Solve for x
    x = 5,458,686,565.92/74,065.60
  6. Step 6: Final answer
    x = 73,700.70

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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.