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Finding the Fourth Proportional to 4,992.16, 7,437.92 and 4,920.88

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Solution

The fourth proportional to 4,992.16, 7,437.92 and 4,920.88 is: 7,331.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,992.16 : 7,437.92 = 4,920.88 : x
  2. Step 2: Convert to fraction form
    4,992.16/7,437.92 = 4,920.88/x
  3. Step 3: Cross multiply
    4,992.16x = 7,437.92 × 4,920.88
  4. Step 4: Simplify right side
    4,992.16x = 36,601,111.77
  5. Step 5: Solve for x
    x = 36,601,111.77/4,992.16
  6. Step 6: Final answer
    x = 7,331.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.