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Finding the Fourth Proportional to 90,941.94, 136,328.54 and 46,470.65

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Solution

The fourth proportional to 90,941.94, 136,328.54 and 46,470.65 is: 69,662.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,941.94 : 136,328.54 = 46,470.65 : x
  2. Step 2: Convert to fraction form
    90,941.94/136,328.54 = 46,470.65/x
  3. Step 3: Cross multiply
    90,941.94x = 136,328.54 × 46,470.65
  4. Step 4: Simplify right side
    90,941.94x = 6,335,274,953.36
  5. Step 5: Solve for x
    x = 6,335,274,953.36/90,941.94
  6. Step 6: Final answer
    x = 69,662.85

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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.