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Finding the Fourth Proportional to 207,006.60, 310,291.20 and 118,068.60

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Solution

The fourth proportional to 207,006.60, 310,291.20 and 118,068.60 is: 176,978.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,006.60 : 310,291.20 = 118,068.60 : x
  2. Step 2: Convert to fraction form
    207,006.60/310,291.20 = 118,068.60/x
  3. Step 3: Cross multiply
    207,006.60x = 310,291.20 × 118,068.60
  4. Step 4: Simplify right side
    207,006.60x = 36,635,647,576.32
  5. Step 5: Solve for x
    x = 36,635,647,576.32/207,006.60
  6. Step 6: Final answer
    x = 176,978.16

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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.