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Finding the Fourth Proportional to 90,203.46, 124,477.71 and 49,918.92

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Solution

The fourth proportional to 90,203.46, 124,477.71 and 49,918.92 is: 68,886.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,203.46 : 124,477.71 = 49,918.92 : x
  2. Step 2: Convert to fraction form
    90,203.46/124,477.71 = 49,918.92/x
  3. Step 3: Cross multiply
    90,203.46x = 124,477.71 × 49,918.92
  4. Step 4: Simplify right side
    90,203.46x = 6,213,792,473.68
  5. Step 5: Solve for x
    x = 6,213,792,473.68/90,203.46
  6. Step 6: Final answer
    x = 68,886.41

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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.