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Finding the Fourth Proportional to 9,888.03, 13,646.75 and 5,696.28

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Solution

The fourth proportional to 9,888.03, 13,646.75 and 5,696.28 is: 7,861.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,888.03 : 13,646.75 = 5,696.28 : x
  2. Step 2: Convert to fraction form
    9,888.03/13,646.75 = 5,696.28/x
  3. Step 3: Cross multiply
    9,888.03x = 13,646.75 × 5,696.28
  4. Step 4: Simplify right side
    9,888.03x = 77,735,680.61
  5. Step 5: Solve for x
    x = 77,735,680.61/9,888.03
  6. Step 6: Final answer
    x = 7,861.59

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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.