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Finding the Fourth Proportional to 84,808.53, 127,010.70 and 47,275.56

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Solution

The fourth proportional to 84,808.53, 127,010.70 and 47,275.56 is: 70,800.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,808.53 : 127,010.70 = 47,275.56 : x
  2. Step 2: Convert to fraction form
    84,808.53/127,010.70 = 47,275.56/x
  3. Step 3: Cross multiply
    84,808.53x = 127,010.70 × 47,275.56
  4. Step 4: Simplify right side
    84,808.53x = 6,004,501,968.49
  5. Step 5: Solve for x
    x = 6,004,501,968.49/84,808.53
  6. Step 6: Final answer
    x = 70,800.68

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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.