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Finding the Fourth Proportional to 14,035.48, 21,048.90 and 7,109.08

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Solution

The fourth proportional to 14,035.48, 21,048.90 and 7,109.08 is: 10,661.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,035.48 : 21,048.90 = 7,109.08 : x
  2. Step 2: Convert to fraction form
    14,035.48/21,048.90 = 7,109.08/x
  3. Step 3: Cross multiply
    14,035.48x = 21,048.90 × 7,109.08
  4. Step 4: Simplify right side
    14,035.48x = 149,638,314.01
  5. Step 5: Solve for x
    x = 149,638,314.01/14,035.48
  6. Step 6: Final answer
    x = 10,661.43

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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.