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Finding the Fourth Proportional to 180,915.08, 270,929.74 and 127,475.72

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Solution

The fourth proportional to 180,915.08, 270,929.74 and 127,475.72 is: 190,901.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,915.08 : 270,929.74 = 127,475.72 : x
  2. Step 2: Convert to fraction form
    180,915.08/270,929.74 = 127,475.72/x
  3. Step 3: Cross multiply
    180,915.08x = 270,929.74 × 127,475.72
  4. Step 4: Simplify right side
    180,915.08x = 34,536,963,675.91
  5. Step 5: Solve for x
    x = 34,536,963,675.91/180,915.08
  6. Step 6: Final answer
    x = 190,901.52

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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.