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Finding the Fourth Proportional to 35,307.99, 48,724.80 and 21,160.83

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Solution

The fourth proportional to 35,307.99, 48,724.80 and 21,160.83 is: 29,201.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,307.99 : 48,724.80 = 21,160.83 : x
  2. Step 2: Convert to fraction form
    35,307.99/48,724.80 = 21,160.83/x
  3. Step 3: Cross multiply
    35,307.99x = 48,724.80 × 21,160.83
  4. Step 4: Simplify right side
    35,307.99x = 1,031,057,209.58
  5. Step 5: Solve for x
    x = 1,031,057,209.58/35,307.99
  6. Step 6: Final answer
    x = 29,201.81

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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.