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Finding the Fourth Proportional to 21,482.74, 29,646.84 and 12,051.64

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Solution

The fourth proportional to 21,482.74, 29,646.84 and 12,051.64 is: 16,631.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,482.74 : 29,646.84 = 12,051.64 : x
  2. Step 2: Convert to fraction form
    21,482.74/29,646.84 = 12,051.64/x
  3. Step 3: Cross multiply
    21,482.74x = 29,646.84 × 12,051.64
  4. Step 4: Simplify right side
    21,482.74x = 357,293,042.82
  5. Step 5: Solve for x
    x = 357,293,042.82/21,482.74
  6. Step 6: Final answer
    x = 16,631.63

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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.