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Finding the Fourth Proportional to 13,894.01, 19,178.04 and 7,929.65

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Solution

The fourth proportional to 13,894.01, 19,178.04 and 7,929.65 is: 10,945.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,894.01 : 19,178.04 = 7,929.65 : x
  2. Step 2: Convert to fraction form
    13,894.01/19,178.04 = 7,929.65/x
  3. Step 3: Cross multiply
    13,894.01x = 19,178.04 × 7,929.65
  4. Step 4: Simplify right side
    13,894.01x = 152,075,049.00
  5. Step 5: Solve for x
    x = 152,075,049.00/13,894.01
  6. Step 6: Final answer
    x = 10,945.37

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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.