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Finding the Fourth Proportional to 123,927.86, 171,013.74 and 70,211.70

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Solution

The fourth proportional to 123,927.86, 171,013.74 and 70,211.70 is: 96,888.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,927.86 : 171,013.74 = 70,211.70 : x
  2. Step 2: Convert to fraction form
    123,927.86/171,013.74 = 70,211.70/x
  3. Step 3: Cross multiply
    123,927.86x = 171,013.74 × 70,211.70
  4. Step 4: Simplify right side
    123,927.86x = 12,007,165,408.76
  5. Step 5: Solve for x
    x = 12,007,165,408.76/123,927.86
  6. Step 6: Final answer
    x = 96,888.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.