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Finding the Fourth Proportional to 122,543.80, 171,211.40 and 122,543.80

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Solution

The fourth proportional to 122,543.80, 171,211.40 and 122,543.80 is: 171,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,543.80 : 171,211.40 = 122,543.80 : x
  2. Step 2: Convert to fraction form
    122,543.80/171,211.40 = 122,543.80/x
  3. Step 3: Cross multiply
    122,543.80x = 171,211.40 × 122,543.80
  4. Step 4: Simplify right side
    122,543.80x = 20,980,895,559.32
  5. Step 5: Solve for x
    x = 20,980,895,559.32/122,543.80
  6. Step 6: Final answer
    x = 171,211.40

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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.