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Finding the Fourth Proportional to 19,587.64, 29,402.52 and 7,908.52

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Solution

The fourth proportional to 19,587.64, 29,402.52 and 7,908.52 is: 11,871.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,587.64 : 29,402.52 = 7,908.52 : x
  2. Step 2: Convert to fraction form
    19,587.64/29,402.52 = 7,908.52/x
  3. Step 3: Cross multiply
    19,587.64x = 29,402.52 × 7,908.52
  4. Step 4: Simplify right side
    19,587.64x = 232,530,417.47
  5. Step 5: Solve for x
    x = 232,530,417.47/19,587.64
  6. Step 6: Final answer
    x = 11,871.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.