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Finding the Fourth Proportional to 171,498.10, 256,518.15 and 153,856.30

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Solution

The fourth proportional to 171,498.10, 256,518.15 and 153,856.30 is: 230,130.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,498.10 : 256,518.15 = 153,856.30 : x
  2. Step 2: Convert to fraction form
    171,498.10/256,518.15 = 153,856.30/x
  3. Step 3: Cross multiply
    171,498.10x = 256,518.15 × 153,856.30
  4. Step 4: Simplify right side
    171,498.10x = 39,466,933,441.85
  5. Step 5: Solve for x
    x = 39,466,933,441.85/171,498.10
  6. Step 6: Final answer
    x = 230,130.44

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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.