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Finding the Fourth Proportional to 170,718.90, 256,078.35 and 170,718.90

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Solution

The fourth proportional to 170,718.90, 256,078.35 and 170,718.90 is: 256,078.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,718.90 : 256,078.35 = 170,718.90 : x
  2. Step 2: Convert to fraction form
    170,718.90/256,078.35 = 170,718.90/x
  3. Step 3: Cross multiply
    170,718.90x = 256,078.35 × 170,718.90
  4. Step 4: Simplify right side
    170,718.90x = 43,717,414,225.82
  5. Step 5: Solve for x
    x = 43,717,414,225.82/170,718.90
  6. Step 6: Final answer
    x = 256,078.35

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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.