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Finding the Fourth Proportional to 70,251.04, 105,376.74 and 28,698.04

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Solution

The fourth proportional to 70,251.04, 105,376.74 and 28,698.04 is: 43,047.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,251.04 : 105,376.74 = 28,698.04 : x
  2. Step 2: Convert to fraction form
    70,251.04/105,376.74 = 28,698.04/x
  3. Step 3: Cross multiply
    70,251.04x = 105,376.74 × 28,698.04
  4. Step 4: Simplify right side
    70,251.04x = 3,024,105,899.59
  5. Step 5: Solve for x
    x = 3,024,105,899.59/70,251.04
  6. Step 6: Final answer
    x = 43,047.13

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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.