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Finding the Fourth Proportional to 19,953.56, 29,930.15 and 7,641.56

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Solution

The fourth proportional to 19,953.56, 29,930.15 and 7,641.56 is: 11,462.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,953.56 : 29,930.15 = 7,641.56 : x
  2. Step 2: Convert to fraction form
    19,953.56/29,930.15 = 7,641.56/x
  3. Step 3: Cross multiply
    19,953.56x = 29,930.15 × 7,641.56
  4. Step 4: Simplify right side
    19,953.56x = 228,712,849.18
  5. Step 5: Solve for x
    x = 228,712,849.18/19,953.56
  6. Step 6: Final answer
    x = 11,462.26

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1.5x scale

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.