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Finding the Fourth Proportional to 48,980.64, 67,573.13 and 31,978.99

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Solution

The fourth proportional to 48,980.64, 67,573.13 and 31,978.99 is: 44,117.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,980.64 : 67,573.13 = 31,978.99 : x
  2. Step 2: Convert to fraction form
    48,980.64/67,573.13 = 31,978.99/x
  3. Step 3: Cross multiply
    48,980.64x = 67,573.13 × 31,978.99
  4. Step 4: Simplify right side
    48,980.64x = 2,160,920,448.54
  5. Step 5: Solve for x
    x = 2,160,920,448.54/48,980.64
  6. Step 6: Final answer
    x = 44,117.85

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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.