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Finding the Fourth Proportional to 9,894.69, 13,652.94 and 5,702.13

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Solution

The fourth proportional to 9,894.69, 13,652.94 and 5,702.13 is: 7,867.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,894.69 : 13,652.94 = 5,702.13 : x
  2. Step 2: Convert to fraction form
    9,894.69/13,652.94 = 5,702.13/x
  3. Step 3: Cross multiply
    9,894.69x = 13,652.94 × 5,702.13
  4. Step 4: Simplify right side
    9,894.69x = 77,850,838.76
  5. Step 5: Solve for x
    x = 77,850,838.76/9,894.69
  6. Step 6: Final answer
    x = 7,867.94

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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.