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Finding the Fourth Proportional to 58,672.16, 80,980.80 and 49,224.32

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Solution

The fourth proportional to 58,672.16, 80,980.80 and 49,224.32 is: 67,940.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,672.16 : 80,980.80 = 49,224.32 : x
  2. Step 2: Convert to fraction form
    58,672.16/80,980.80 = 49,224.32/x
  3. Step 3: Cross multiply
    58,672.16x = 80,980.80 × 49,224.32
  4. Step 4: Simplify right side
    58,672.16x = 3,986,224,813.06
  5. Step 5: Solve for x
    x = 3,986,224,813.06/58,672.16
  6. Step 6: Final answer
    x = 67,940.65

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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.