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Finding the Fourth Proportional to 68,703.15, 94,810.37 and 38,488.47

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Solution

The fourth proportional to 68,703.15, 94,810.37 and 38,488.47 is: 53,114.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,703.15 : 94,810.37 = 38,488.47 : x
  2. Step 2: Convert to fraction form
    68,703.15/94,810.37 = 38,488.47/x
  3. Step 3: Cross multiply
    68,703.15x = 94,810.37 × 38,488.47
  4. Step 4: Simplify right side
    68,703.15x = 3,649,105,888.99
  5. Step 5: Solve for x
    x = 3,649,105,888.99/68,703.15
  6. Step 6: Final answer
    x = 53,114.10

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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.