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Finding the Fourth Proportional to 185,585.60, 256,108.88 and 100,702.64

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Solution

The fourth proportional to 185,585.60, 256,108.88 and 100,702.64 is: 138,970.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,585.60 : 256,108.88 = 100,702.64 : x
  2. Step 2: Convert to fraction form
    185,585.60/256,108.88 = 100,702.64/x
  3. Step 3: Cross multiply
    185,585.60x = 256,108.88 × 100,702.64
  4. Step 4: Simplify right side
    185,585.60x = 25,790,840,343.44
  5. Step 5: Solve for x
    x = 25,790,840,343.44/185,585.60
  6. Step 6: Final answer
    x = 138,970.05

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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.