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Finding the Fourth Proportional to 9,893.84, 13,653.40 and 5,702

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Solution

The fourth proportional to 9,893.84, 13,653.40 and 5,702 is: 7,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,893.84 : 13,653.40 = 5,702 : x
  2. Step 2: Convert to fraction form
    9,893.84/13,653.40 = 5,702/x
  3. Step 3: Cross multiply
    9,893.84x = 13,653.40 × 5,702
  4. Step 4: Simplify right side
    9,893.84x = 77,851,686.80
  5. Step 5: Solve for x
    x = 77,851,686.80/9,893.84
  6. Step 6: Final answer
    x = 7,868.70

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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.