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Finding the Fourth Proportional to 14,688.51, 20,262.13 and 9,301.11

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Solution

The fourth proportional to 14,688.51, 20,262.13 and 9,301.11 is: 12,830.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.51 : 20,262.13 = 9,301.11 : x
  2. Step 2: Convert to fraction form
    14,688.51/20,262.13 = 9,301.11/x
  3. Step 3: Cross multiply
    14,688.51x = 20,262.13 × 9,301.11
  4. Step 4: Simplify right side
    14,688.51x = 188,460,299.96
  5. Step 5: Solve for x
    x = 188,460,299.96/14,688.51
  6. Step 6: Final answer
    x = 12,830.46

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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.