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Finding the Fourth Proportional to 14,703.17, 20,291.51 and 8,331.31

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Solution

The fourth proportional to 14,703.17, 20,291.51 and 8,331.31 is: 11,497.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,703.17 : 20,291.51 = 8,331.31 : x
  2. Step 2: Convert to fraction form
    14,703.17/20,291.51 = 8,331.31/x
  3. Step 3: Cross multiply
    14,703.17x = 20,291.51 × 8,331.31
  4. Step 4: Simplify right side
    14,703.17x = 169,054,792.23
  5. Step 5: Solve for x
    x = 169,054,792.23/14,703.17
  6. Step 6: Final answer
    x = 11,497.85

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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.