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Finding the Fourth Proportional to 21,656.99, 29,886.33 and 12,097.01

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Solution

The fourth proportional to 21,656.99, 29,886.33 and 12,097.01 is: 16,693.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.99 : 29,886.33 = 12,097.01 : x
  2. Step 2: Convert to fraction form
    21,656.99/29,886.33 = 12,097.01/x
  3. Step 3: Cross multiply
    21,656.99x = 29,886.33 × 12,097.01
  4. Step 4: Simplify right side
    21,656.99x = 361,535,284.91
  5. Step 5: Solve for x
    x = 361,535,284.91/21,656.99
  6. Step 6: Final answer
    x = 16,693.70

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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.