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Finding the Fourth Proportional to 61,405.59, 91,758.77 and 46,108.42

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Solution

The fourth proportional to 61,405.59, 91,758.77 and 46,108.42 is: 68,900.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,405.59 : 91,758.77 = 46,108.42 : x
  2. Step 2: Convert to fraction form
    61,405.59/91,758.77 = 46,108.42/x
  3. Step 3: Cross multiply
    61,405.59x = 91,758.77 × 46,108.42
  4. Step 4: Simplify right side
    61,405.59x = 4,230,851,905.84
  5. Step 5: Solve for x
    x = 4,230,851,905.84/61,405.59
  6. Step 6: Final answer
    x = 68,900.11

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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.