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Finding the Fourth Proportional to 13,894.16, 19,172.15 and 7,925.47

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Solution

The fourth proportional to 13,894.16, 19,172.15 and 7,925.47 is: 10,936.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,894.16 : 19,172.15 = 7,925.47 : x
  2. Step 2: Convert to fraction form
    13,894.16/19,172.15 = 7,925.47/x
  3. Step 3: Cross multiply
    13,894.16x = 19,172.15 × 7,925.47
  4. Step 4: Simplify right side
    13,894.16x = 151,948,349.67
  5. Step 5: Solve for x
    x = 151,948,349.67/13,894.16
  6. Step 6: Final answer
    x = 10,936.13

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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.