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Finding the Fourth Proportional to 13,791.65, 19,032.59 and 7,503.89

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Solution

The fourth proportional to 13,791.65, 19,032.59 and 7,503.89 is: 10,355.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,791.65 : 19,032.59 = 7,503.89 : x
  2. Step 2: Convert to fraction form
    13,791.65/19,032.59 = 7,503.89/x
  3. Step 3: Cross multiply
    13,791.65x = 19,032.59 × 7,503.89
  4. Step 4: Simplify right side
    13,791.65x = 142,818,385.37
  5. Step 5: Solve for x
    x = 142,818,385.37/13,791.65
  6. Step 6: Final answer
    x = 10,355.43

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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.