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Finding the Fourth Proportional to 34,978.77, 48,289.16 and 28,098.23

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Solution

The fourth proportional to 34,978.77, 48,289.16 and 28,098.23 is: 38,790.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,978.77 : 48,289.16 = 28,098.23 : x
  2. Step 2: Convert to fraction form
    34,978.77/48,289.16 = 28,098.23/x
  3. Step 3: Cross multiply
    34,978.77x = 48,289.16 × 28,098.23
  4. Step 4: Simplify right side
    34,978.77x = 1,356,839,752.99
  5. Step 5: Solve for x
    x = 1,356,839,752.99/34,978.77
  6. Step 6: Final answer
    x = 38,790.38

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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.