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Finding the Fourth Proportional to 99,390.96, 149,118.84 and 46,805.76

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Solution

The fourth proportional to 99,390.96, 149,118.84 and 46,805.76 is: 70,223.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,390.96 : 149,118.84 = 46,805.76 : x
  2. Step 2: Convert to fraction form
    99,390.96/149,118.84 = 46,805.76/x
  3. Step 3: Cross multiply
    99,390.96x = 149,118.84 × 46,805.76
  4. Step 4: Simplify right side
    99,390.96x = 6,979,620,636.52
  5. Step 5: Solve for x
    x = 6,979,620,636.52/99,390.96
  6. Step 6: Final answer
    x = 70,223.90

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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.