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Finding the Fourth Proportional to 70,362.66, 105,616.89 and 47,151.30

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Solution

The fourth proportional to 70,362.66, 105,616.89 and 47,151.30 is: 70,775.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,362.66 : 105,616.89 = 47,151.30 : x
  2. Step 2: Convert to fraction form
    70,362.66/105,616.89 = 47,151.30/x
  3. Step 3: Cross multiply
    70,362.66x = 105,616.89 × 47,151.30
  4. Step 4: Simplify right side
    70,362.66x = 4,979,973,665.46
  5. Step 5: Solve for x
    x = 4,979,973,665.46/70,362.66
  6. Step 6: Final answer
    x = 70,775.80

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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.