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Finding the Fourth Proportional to 64,328.58, 96,641.20 and 61,671.42

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Solution

The fourth proportional to 64,328.58, 96,641.20 and 61,671.42 is: 92,649.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,328.58 : 96,641.20 = 61,671.42 : x
  2. Step 2: Convert to fraction form
    64,328.58/96,641.20 = 61,671.42/x
  3. Step 3: Cross multiply
    64,328.58x = 96,641.20 × 61,671.42
  4. Step 4: Simplify right side
    64,328.58x = 5,960,000,034.50
  5. Step 5: Solve for x
    x = 5,960,000,034.50/64,328.58
  6. Step 6: Final answer
    x = 92,649.33

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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.