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Finding the Fourth Proportional to 50,907.90, 70,252.74 and 28,250.31

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Solution

The fourth proportional to 50,907.90, 70,252.74 and 28,250.31 is: 38,985.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,907.90 : 70,252.74 = 28,250.31 : x
  2. Step 2: Convert to fraction form
    50,907.90/70,252.74 = 28,250.31/x
  3. Step 3: Cross multiply
    50,907.90x = 70,252.74 × 28,250.31
  4. Step 4: Simplify right side
    50,907.90x = 1,984,661,683.35
  5. Step 5: Solve for x
    x = 1,984,661,683.35/50,907.90
  6. Step 6: Final answer
    x = 38,985.34

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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.