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Finding the Fourth Proportional to 106,443.60, 159,665.40 and 93,321.60

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Solution

The fourth proportional to 106,443.60, 159,665.40 and 93,321.60 is: 139,982.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,443.60 : 159,665.40 = 93,321.60 : x
  2. Step 2: Convert to fraction form
    106,443.60/159,665.40 = 93,321.60/x
  3. Step 3: Cross multiply
    106,443.60x = 159,665.40 × 93,321.60
  4. Step 4: Simplify right side
    106,443.60x = 14,900,230,592.64
  5. Step 5: Solve for x
    x = 14,900,230,592.64/106,443.60
  6. Step 6: Final answer
    x = 139,982.40

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1.5x scale

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.