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Finding the Fourth Proportional to 7,956.51, 11,920.52 and 5,316.02

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Solution

The fourth proportional to 7,956.51, 11,920.52 and 5,316.02 is: 7,964.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,956.51 : 11,920.52 = 5,316.02 : x
  2. Step 2: Convert to fraction form
    7,956.51/11,920.52 = 5,316.02/x
  3. Step 3: Cross multiply
    7,956.51x = 11,920.52 × 5,316.02
  4. Step 4: Simplify right side
    7,956.51x = 63,369,721.12
  5. Step 5: Solve for x
    x = 63,369,721.12/7,956.51
  6. Step 6: Final answer
    x = 7,964.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.