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Finding the Fourth Proportional to 64,511.60, 96,637.80 and 44,812.40

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Solution

The fourth proportional to 64,511.60, 96,637.80 and 44,812.40 is: 67,128.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,511.60 : 96,637.80 = 44,812.40 : x
  2. Step 2: Convert to fraction form
    64,511.60/96,637.80 = 44,812.40/x
  3. Step 3: Cross multiply
    64,511.60x = 96,637.80 × 44,812.40
  4. Step 4: Simplify right side
    64,511.60x = 4,330,571,748.72
  5. Step 5: Solve for x
    x = 4,330,571,748.72/64,511.60
  6. Step 6: Final answer
    x = 67,128.57

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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.