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Finding the Fourth Proportional to 61,872.70, 92,809.05 and 46,320.70

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Solution

The fourth proportional to 61,872.70, 92,809.05 and 46,320.70 is: 69,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,872.70 : 92,809.05 = 46,320.70 : x
  2. Step 2: Convert to fraction form
    61,872.70/92,809.05 = 46,320.70/x
  3. Step 3: Cross multiply
    61,872.70x = 92,809.05 × 46,320.70
  4. Step 4: Simplify right side
    61,872.70x = 4,298,980,162.34
  5. Step 5: Solve for x
    x = 4,298,980,162.34/61,872.70
  6. Step 6: Final answer
    x = 69,481.05

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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.