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Finding the Fourth Proportional to 46,678.69, 70,028.99 and 28,686.97

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Solution

The fourth proportional to 46,678.69, 70,028.99 and 28,686.97 is: 43,037.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,678.69 : 70,028.99 = 28,686.97 : x
  2. Step 2: Convert to fraction form
    46,678.69/70,028.99 = 28,686.97/x
  3. Step 3: Cross multiply
    46,678.69x = 70,028.99 × 28,686.97
  4. Step 4: Simplify right side
    46,678.69x = 2,008,919,041.68
  5. Step 5: Solve for x
    x = 2,008,919,041.68/46,678.69
  6. Step 6: Final answer
    x = 43,037.18

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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.