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Finding the Fourth Proportional to 14,205, 19,603.02 and 7,918.68

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Solution

The fourth proportional to 14,205, 19,603.02 and 7,918.68 is: 10,927.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,205 : 19,603.02 = 7,918.68 : x
  2. Step 2: Convert to fraction form
    14,205/19,603.02 = 7,918.68/x
  3. Step 3: Cross multiply
    14,205x = 19,603.02 × 7,918.68
  4. Step 4: Simplify right side
    14,205x = 155,230,042.41
  5. Step 5: Solve for x
    x = 155,230,042.41/14,205
  6. Step 6: Final answer
    x = 10,927.85

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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.