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Finding the Fourth Proportional to 14,045.65, 21,053.49 and 7,011.82

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Solution

The fourth proportional to 14,045.65, 21,053.49 and 7,011.82 is: 10,510.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,045.65 : 21,053.49 = 7,011.82 : x
  2. Step 2: Convert to fraction form
    14,045.65/21,053.49 = 7,011.82/x
  3. Step 3: Cross multiply
    14,045.65x = 21,053.49 × 7,011.82
  4. Step 4: Simplify right side
    14,045.65x = 147,623,282.25
  5. Step 5: Solve for x
    x = 147,623,282.25/14,045.65
  6. Step 6: Final answer
    x = 10,510.25

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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.