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Finding the Fourth Proportional to 14,703.51, 20,290.87 and 7,989.22

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Solution

The fourth proportional to 14,703.51, 20,290.87 and 7,989.22 is: 11,025.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,703.51 : 20,290.87 = 7,989.22 : x
  2. Step 2: Convert to fraction form
    14,703.51/20,290.87 = 7,989.22/x
  3. Step 3: Cross multiply
    14,703.51x = 20,290.87 × 7,989.22
  4. Step 4: Simplify right side
    14,703.51x = 162,108,224.42
  5. Step 5: Solve for x
    x = 162,108,224.42/14,703.51
  6. Step 6: Final answer
    x = 11,025.14

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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.