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Finding the Fourth Proportional to 334,694.60, 502,038.70 and 81,976.20

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Solution

The fourth proportional to 334,694.60, 502,038.70 and 81,976.20 is: 122,963.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,694.60 : 502,038.70 = 81,976.20 : x
  2. Step 2: Convert to fraction form
    334,694.60/502,038.70 = 81,976.20/x
  3. Step 3: Cross multiply
    334,694.60x = 502,038.70 × 81,976.20
  4. Step 4: Simplify right side
    334,694.60x = 41,155,224,878.94
  5. Step 5: Solve for x
    x = 41,155,224,878.94/334,694.60
  6. Step 6: Final answer
    x = 122,963.52

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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.