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Finding the Fourth Proportional to 122,261.55, 170,816.25 and 122,261.55

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Solution

The fourth proportional to 122,261.55, 170,816.25 and 122,261.55 is: 170,816.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,261.55 : 170,816.25 = 122,261.55 : x
  2. Step 2: Convert to fraction form
    122,261.55/170,816.25 = 122,261.55/x
  3. Step 3: Cross multiply
    122,261.55x = 170,816.25 × 122,261.55
  4. Step 4: Simplify right side
    122,261.55x = 20,884,259,490.19
  5. Step 5: Solve for x
    x = 20,884,259,490.19/122,261.55
  6. Step 6: Final answer
    x = 170,816.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.