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Finding the Fourth Proportional to 90,503.63, 124,893.11 and 50,216.53

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Solution

The fourth proportional to 90,503.63, 124,893.11 and 50,216.53 is: 69,297.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,503.63 : 124,893.11 = 50,216.53 : x
  2. Step 2: Convert to fraction form
    90,503.63/124,893.11 = 50,216.53/x
  3. Step 3: Cross multiply
    90,503.63x = 124,893.11 × 50,216.53
  4. Step 4: Simplify right side
    90,503.63x = 6,271,698,041.79
  5. Step 5: Solve for x
    x = 6,271,698,041.79/90,503.63
  6. Step 6: Final answer
    x = 69,297.75

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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.