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Finding the Fourth Proportional to 64,401.60, 96,688.80 and 41,073.60

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Solution

The fourth proportional to 64,401.60, 96,688.80 and 41,073.60 is: 61,665.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,401.60 : 96,688.80 = 41,073.60 : x
  2. Step 2: Convert to fraction form
    64,401.60/96,688.80 = 41,073.60/x
  3. Step 3: Cross multiply
    64,401.60x = 96,688.80 × 41,073.60
  4. Step 4: Simplify right side
    64,401.60x = 3,971,357,095.68
  5. Step 5: Solve for x
    x = 3,971,357,095.68/64,401.60
  6. Step 6: Final answer
    x = 61,665.50

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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.