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Finding the Fourth Proportional to 14,357.84, 19,813.80 and 8,070.24

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Solution

The fourth proportional to 14,357.84, 19,813.80 and 8,070.24 is: 11,136.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,357.84 : 19,813.80 = 8,070.24 : x
  2. Step 2: Convert to fraction form
    14,357.84/19,813.80 = 8,070.24/x
  3. Step 3: Cross multiply
    14,357.84x = 19,813.80 × 8,070.24
  4. Step 4: Simplify right side
    14,357.84x = 159,902,121.31
  5. Step 5: Solve for x
    x = 159,902,121.31/14,357.84
  6. Step 6: Final answer
    x = 11,136.92

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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.