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Finding the Fourth Proportional to 34,398.69, 51,603.17 and 12,210.21

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Solution

The fourth proportional to 34,398.69, 51,603.17 and 12,210.21 is: 18,317.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,398.69 : 51,603.17 = 12,210.21 : x
  2. Step 2: Convert to fraction form
    34,398.69/51,603.17 = 12,210.21/x
  3. Step 3: Cross multiply
    34,398.69x = 51,603.17 × 12,210.21
  4. Step 4: Simplify right side
    34,398.69x = 630,085,542.37
  5. Step 5: Solve for x
    x = 630,085,542.37/34,398.69
  6. Step 6: Final answer
    x = 18,317.14

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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.