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Finding the Fourth Proportional to 21,593.99, 29,783.84 and 14,312.91

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Solution

The fourth proportional to 21,593.99, 29,783.84 and 14,312.91 is: 19,741.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,593.99 : 29,783.84 = 14,312.91 : x
  2. Step 2: Convert to fraction form
    21,593.99/29,783.84 = 14,312.91/x
  3. Step 3: Cross multiply
    21,593.99x = 29,783.84 × 14,312.91
  4. Step 4: Simplify right side
    21,593.99x = 426,293,421.37
  5. Step 5: Solve for x
    x = 426,293,421.37/21,593.99
  6. Step 6: Final answer
    x = 19,741.30

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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.