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Finding the Fourth Proportional to 15,926.49, 21,978.59 and 8,852.93

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Solution

The fourth proportional to 15,926.49, 21,978.59 and 8,852.93 is: 12,217.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,926.49 : 21,978.59 = 8,852.93 : x
  2. Step 2: Convert to fraction form
    15,926.49/21,978.59 = 8,852.93/x
  3. Step 3: Cross multiply
    15,926.49x = 21,978.59 × 8,852.93
  4. Step 4: Simplify right side
    15,926.49x = 194,574,808.88
  5. Step 5: Solve for x
    x = 194,574,808.88/15,926.49
  6. Step 6: Final answer
    x = 12,217.06

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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.