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Finding the Fourth Proportional to 64,395.81, 96,649.31 and 44,688.21

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Solution

The fourth proportional to 64,395.81, 96,649.31 and 44,688.21 is: 67,070.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,395.81 : 96,649.31 = 44,688.21 : x
  2. Step 2: Convert to fraction form
    64,395.81/96,649.31 = 44,688.21/x
  3. Step 3: Cross multiply
    64,395.81x = 96,649.31 × 44,688.21
  4. Step 4: Simplify right side
    64,395.81x = 4,319,084,605.77
  5. Step 5: Solve for x
    x = 4,319,084,605.77/64,395.81
  6. Step 6: Final answer
    x = 67,070.89

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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.