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Finding the Fourth Proportional to 207,368.22, 310,809.54 and 79,200.54

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Solution

The fourth proportional to 207,368.22, 310,809.54 and 79,200.54 is: 118,708.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,368.22 : 310,809.54 = 79,200.54 : x
  2. Step 2: Convert to fraction form
    207,368.22/310,809.54 = 79,200.54/x
  3. Step 3: Cross multiply
    207,368.22x = 310,809.54 × 79,200.54
  4. Step 4: Simplify right side
    207,368.22x = 24,616,283,405.15
  5. Step 5: Solve for x
    x = 24,616,283,405.15/207,368.22
  6. Step 6: Final answer
    x = 118,708.08

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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.