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Finding the Fourth Proportional to 72,147.93, 107,693.55 and 63,625.98

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Solution

The fourth proportional to 72,147.93, 107,693.55 and 63,625.98 is: 94,973.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,147.93 : 107,693.55 = 63,625.98 : x
  2. Step 2: Convert to fraction form
    72,147.93/107,693.55 = 63,625.98/x
  3. Step 3: Cross multiply
    72,147.93x = 107,693.55 × 63,625.98
  4. Step 4: Simplify right side
    72,147.93x = 6,852,107,658.43
  5. Step 5: Solve for x
    x = 6,852,107,658.43/72,147.93
  6. Step 6: Final answer
    x = 94,973.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.