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Finding the Fourth Proportional to 170,893.72, 256,392.52 and 121,070.20

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Solution

The fourth proportional to 170,893.72, 256,392.52 and 121,070.20 is: 181,642.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,893.72 : 256,392.52 = 121,070.20 : x
  2. Step 2: Convert to fraction form
    170,893.72/256,392.52 = 121,070.20/x
  3. Step 3: Cross multiply
    170,893.72x = 256,392.52 × 121,070.20
  4. Step 4: Simplify right side
    170,893.72x = 31,041,493,674.90
  5. Step 5: Solve for x
    x = 31,041,493,674.90/170,893.72
  6. Step 6: Final answer
    x = 181,642.10

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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.