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Finding the Fourth Proportional to 70,876.66, 97,810.02 and 39,045.46

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Solution

The fourth proportional to 70,876.66, 97,810.02 and 39,045.46 is: 53,882.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,876.66 : 97,810.02 = 39,045.46 : x
  2. Step 2: Convert to fraction form
    70,876.66/97,810.02 = 39,045.46/x
  3. Step 3: Cross multiply
    70,876.66x = 97,810.02 × 39,045.46
  4. Step 4: Simplify right side
    70,876.66x = 3,819,037,223.51
  5. Step 5: Solve for x
    x = 3,819,037,223.51/70,876.66
  6. Step 6: Final answer
    x = 53,882.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.