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Finding the Fourth Proportional to 113,020.60, 169,530.90 and 93,321.40

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Solution

The fourth proportional to 113,020.60, 169,530.90 and 93,321.40 is: 139,982.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,020.60 : 169,530.90 = 93,321.40 : x
  2. Step 2: Convert to fraction form
    113,020.60/169,530.90 = 93,321.40/x
  3. Step 3: Cross multiply
    113,020.60x = 169,530.90 × 93,321.40
  4. Step 4: Simplify right side
    113,020.60x = 15,820,860,931.26
  5. Step 5: Solve for x
    x = 15,820,860,931.26/113,020.60
  6. Step 6: Final answer
    x = 139,982.10

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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.