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Finding the Fourth Proportional to 21,220.48, 32,030.14 and 21,220.48

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Solution

The fourth proportional to 21,220.48, 32,030.14 and 21,220.48 is: 32,030.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.48 : 32,030.14 = 21,220.48 : x
  2. Step 2: Convert to fraction form
    21,220.48/32,030.14 = 21,220.48/x
  3. Step 3: Cross multiply
    21,220.48x = 32,030.14 × 21,220.48
  4. Step 4: Simplify right side
    21,220.48x = 679,694,945.27
  5. Step 5: Solve for x
    x = 679,694,945.27/21,220.48
  6. Step 6: Final answer
    x = 32,030.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.