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Finding the Fourth Proportional to 170,753.80, 256,128.30 and 77,259.40

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Solution

The fourth proportional to 170,753.80, 256,128.30 and 77,259.40 is: 115,888.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,753.80 : 256,128.30 = 77,259.40 : x
  2. Step 2: Convert to fraction form
    170,753.80/256,128.30 = 77,259.40/x
  3. Step 3: Cross multiply
    170,753.80x = 256,128.30 × 77,259.40
  4. Step 4: Simplify right side
    170,753.80x = 19,788,318,781.02
  5. Step 5: Solve for x
    x = 19,788,318,781.02/170,753.80
  6. Step 6: Final answer
    x = 115,888.01

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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.