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Finding the Fourth Proportional to 175,171.78, 262,746.72 and 69,915.10

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Solution

The fourth proportional to 175,171.78, 262,746.72 and 69,915.10 is: 104,868.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,171.78 : 262,746.72 = 69,915.10 : x
  2. Step 2: Convert to fraction form
    175,171.78/262,746.72 = 69,915.10/x
  3. Step 3: Cross multiply
    175,171.78x = 262,746.72 × 69,915.10
  4. Step 4: Simplify right side
    175,171.78x = 18,369,963,203.47
  5. Step 5: Solve for x
    x = 18,369,963,203.47/175,171.78
  6. Step 6: Final answer
    x = 104,868.28

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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.