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Finding the Fourth Proportional to 7,860.81, 10,848.05 and 4,323.99

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Solution

The fourth proportional to 7,860.81, 10,848.05 and 4,323.99 is: 5,967.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.81 : 10,848.05 = 4,323.99 : x
  2. Step 2: Convert to fraction form
    7,860.81/10,848.05 = 4,323.99/x
  3. Step 3: Cross multiply
    7,860.81x = 10,848.05 × 4,323.99
  4. Step 4: Simplify right side
    7,860.81x = 46,906,838.10
  5. Step 5: Solve for x
    x = 46,906,838.10/7,860.81
  6. Step 6: Final answer
    x = 5,967.18

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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.