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Finding the Fourth Proportional to 64,378.40, 96,567.60 and 60,749.60

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Solution

The fourth proportional to 64,378.40, 96,567.60 and 60,749.60 is: 91,124.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,378.40 : 96,567.60 = 60,749.60 : x
  2. Step 2: Convert to fraction form
    64,378.40/96,567.60 = 60,749.60/x
  3. Step 3: Cross multiply
    64,378.40x = 96,567.60 × 60,749.60
  4. Step 4: Simplify right side
    64,378.40x = 5,866,443,072.96
  5. Step 5: Solve for x
    x = 5,866,443,072.96/64,378.40
  6. Step 6: Final answer
    x = 91,124.40

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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.