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Finding the Fourth Proportional to 265,570.80, 398,356.20 and 171,092.40

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Solution

The fourth proportional to 265,570.80, 398,356.20 and 171,092.40 is: 256,638.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,570.80 : 398,356.20 = 171,092.40 : x
  2. Step 2: Convert to fraction form
    265,570.80/398,356.20 = 171,092.40/x
  3. Step 3: Cross multiply
    265,570.80x = 398,356.20 × 171,092.40
  4. Step 4: Simplify right side
    265,570.80x = 68,155,718,312.88
  5. Step 5: Solve for x
    x = 68,155,718,312.88/265,570.80
  6. Step 6: Final answer
    x = 256,638.60

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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.