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Finding the Fourth Proportional to 99,409.16, 148,703.67 and 63,815.73

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Solution

The fourth proportional to 99,409.16, 148,703.67 and 63,815.73 is: 95,460.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,409.16 : 148,703.67 = 63,815.73 : x
  2. Step 2: Convert to fraction form
    99,409.16/148,703.67 = 63,815.73/x
  3. Step 3: Cross multiply
    99,409.16x = 148,703.67 × 63,815.73
  4. Step 4: Simplify right side
    99,409.16x = 9,489,633,254.73
  5. Step 5: Solve for x
    x = 9,489,633,254.73/99,409.16
  6. Step 6: Final answer
    x = 95,460.36

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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.