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Finding the Fourth Proportional to 19,357.84, 29,038.20 and 9,992.01

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Solution

The fourth proportional to 19,357.84, 29,038.20 and 9,992.01 is: 14,988.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,357.84 : 29,038.20 = 9,992.01 : x
  2. Step 2: Convert to fraction form
    19,357.84/29,038.20 = 9,992.01/x
  3. Step 3: Cross multiply
    19,357.84x = 29,038.20 × 9,992.01
  4. Step 4: Simplify right side
    19,357.84x = 290,149,892.87
  5. Step 5: Solve for x
    x = 290,149,892.87/19,357.84
  6. Step 6: Final answer
    x = 14,988.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.