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Finding the Fourth Proportional to 529,116.60, 730,168.79 and 287,393.87

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Solution

The fourth proportional to 529,116.60, 730,168.79 and 287,393.87 is: 396,596.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,116.60 : 730,168.79 = 287,393.87 : x
  2. Step 2: Convert to fraction form
    529,116.60/730,168.79 = 287,393.87/x
  3. Step 3: Cross multiply
    529,116.60x = 730,168.79 × 287,393.87
  4. Step 4: Simplify right side
    529,116.60x = 209,846,029,223.50
  5. Step 5: Solve for x
    x = 209,846,029,223.50/529,116.60
  6. Step 6: Final answer
    x = 396,596.95

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1.5x scale

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.