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Finding the Fourth Proportional to 64,307.10, 96,460.65 and 43,311.90

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Solution

The fourth proportional to 64,307.10, 96,460.65 and 43,311.90 is: 64,967.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,307.10 : 96,460.65 = 43,311.90 : x
  2. Step 2: Convert to fraction form
    64,307.10/96,460.65 = 43,311.90/x
  3. Step 3: Cross multiply
    64,307.10x = 96,460.65 × 43,311.90
  4. Step 4: Simplify right side
    64,307.10x = 4,177,894,026.74
  5. Step 5: Solve for x
    x = 4,177,894,026.74/64,307.10
  6. Step 6: Final answer
    x = 64,967.85

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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.