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Finding the Fourth Proportional to 215,563.74, 297,466.20 and 118,748.64

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Solution

The fourth proportional to 215,563.74, 297,466.20 and 118,748.64 is: 163,866.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,563.74 : 297,466.20 = 118,748.64 : x
  2. Step 2: Convert to fraction form
    215,563.74/297,466.20 = 118,748.64/x
  3. Step 3: Cross multiply
    215,563.74x = 297,466.20 × 118,748.64
  4. Step 4: Simplify right side
    215,563.74x = 35,323,706,695.97
  5. Step 5: Solve for x
    x = 35,323,706,695.97/215,563.74
  6. Step 6: Final answer
    x = 163,866.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.