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Finding the Fourth Proportional to 96,668.40, 145,002.60 and 85,263.60

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Solution

The fourth proportional to 96,668.40, 145,002.60 and 85,263.60 is: 127,895.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,668.40 : 145,002.60 = 85,263.60 : x
  2. Step 2: Convert to fraction form
    96,668.40/145,002.60 = 85,263.60/x
  3. Step 3: Cross multiply
    96,668.40x = 145,002.60 × 85,263.60
  4. Step 4: Simplify right side
    96,668.40x = 12,363,443,685.36
  5. Step 5: Solve for x
    x = 12,363,443,685.36/96,668.40
  6. Step 6: Final answer
    x = 127,895.40

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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.