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Finding the Fourth Proportional to 207,092.60, 310,420.20 and 118,154.60

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Solution

The fourth proportional to 207,092.60, 310,420.20 and 118,154.60 is: 177,107.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,092.60 : 310,420.20 = 118,154.60 : x
  2. Step 2: Convert to fraction form
    207,092.60/310,420.20 = 118,154.60/x
  3. Step 3: Cross multiply
    207,092.60x = 310,420.20 × 118,154.60
  4. Step 4: Simplify right side
    207,092.60x = 36,677,574,562.92
  5. Step 5: Solve for x
    x = 36,677,574,562.92/207,092.60
  6. Step 6: Final answer
    x = 177,107.12

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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.