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Finding the Fourth Proportional to 156,838.80, 235,258.20 and 153,728.40

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Solution

The fourth proportional to 156,838.80, 235,258.20 and 153,728.40 is: 230,592.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,838.80 : 235,258.20 = 153,728.40 : x
  2. Step 2: Convert to fraction form
    156,838.80/235,258.20 = 153,728.40/x
  3. Step 3: Cross multiply
    156,838.80x = 235,258.20 × 153,728.40
  4. Step 4: Simplify right side
    156,838.80x = 36,165,866,672.88
  5. Step 5: Solve for x
    x = 36,165,866,672.88/156,838.80
  6. Step 6: Final answer
    x = 230,592.60

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1.5x scale

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.