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Finding the Fourth Proportional to 262,017.20, 392,118.60 and 156,911.60

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Solution

The fourth proportional to 262,017.20, 392,118.60 and 156,911.60 is: 234,824.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,017.20 : 392,118.60 = 156,911.60 : x
  2. Step 2: Convert to fraction form
    262,017.20/392,118.60 = 156,911.60/x
  3. Step 3: Cross multiply
    262,017.20x = 392,118.60 × 156,911.60
  4. Step 4: Simplify right side
    262,017.20x = 61,527,956,915.76
  5. Step 5: Solve for x
    x = 61,527,956,915.76/262,017.20
  6. Step 6: Final answer
    x = 234,824.11

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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.