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Finding the Fourth Proportional to 70,472.65, 105,501.60 and 47,040.97

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Solution

The fourth proportional to 70,472.65, 105,501.60 and 47,040.97 is: 70,423.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,472.65 : 105,501.60 = 47,040.97 : x
  2. Step 2: Convert to fraction form
    70,472.65/105,501.60 = 47,040.97/x
  3. Step 3: Cross multiply
    70,472.65x = 105,501.60 × 47,040.97
  4. Step 4: Simplify right side
    70,472.65x = 4,962,897,073.04
  5. Step 5: Solve for x
    x = 4,962,897,073.04/70,472.65
  6. Step 6: Final answer
    x = 70,423.03

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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.