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Finding the Fourth Proportional to 50,672.25, 69,929.87 and 28,316.25

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Solution

The fourth proportional to 50,672.25, 69,929.87 and 28,316.25 is: 39,077.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,672.25 : 69,929.87 = 28,316.25 : x
  2. Step 2: Convert to fraction form
    50,672.25/69,929.87 = 28,316.25/x
  3. Step 3: Cross multiply
    50,672.25x = 69,929.87 × 28,316.25
  4. Step 4: Simplify right side
    50,672.25x = 1,980,151,539.81
  5. Step 5: Solve for x
    x = 1,980,151,539.81/50,672.25
  6. Step 6: Final answer
    x = 39,077.63

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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.