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Finding the Fourth Proportional to 67,143.54, 92,657.95 and 38,472.51

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Solution

The fourth proportional to 67,143.54, 92,657.95 and 38,472.51 is: 53,091.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,143.54 : 92,657.95 = 38,472.51 : x
  2. Step 2: Convert to fraction form
    67,143.54/92,657.95 = 38,472.51/x
  3. Step 3: Cross multiply
    67,143.54x = 92,657.95 × 38,472.51
  4. Step 4: Simplify right side
    67,143.54x = 3,564,783,907.95
  5. Step 5: Solve for x
    x = 3,564,783,907.95/67,143.54
  6. Step 6: Final answer
    x = 53,091.99

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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.