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Finding the Fourth Proportional to 22,798.59, 31,483.79 and 21,556.11

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Solution

The fourth proportional to 22,798.59, 31,483.79 and 21,556.11 is: 29,767.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,798.59 : 31,483.79 = 21,556.11 : x
  2. Step 2: Convert to fraction form
    22,798.59/31,483.79 = 21,556.11/x
  3. Step 3: Cross multiply
    22,798.59x = 31,483.79 × 21,556.11
  4. Step 4: Simplify right side
    22,798.59x = 678,668,040.46
  5. Step 5: Solve for x
    x = 678,668,040.46/22,798.59
  6. Step 6: Final answer
    x = 29,767.98

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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.