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Finding the Fourth Proportional to 50,987.66, 70,362.50 and 28,326.68

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Solution

The fourth proportional to 50,987.66, 70,362.50 and 28,326.68 is: 39,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,987.66 : 70,362.50 = 28,326.68 : x
  2. Step 2: Convert to fraction form
    50,987.66/70,362.50 = 28,326.68/x
  3. Step 3: Cross multiply
    50,987.66x = 70,362.50 × 28,326.68
  4. Step 4: Simplify right side
    50,987.66x = 1,993,136,021.50
  5. Step 5: Solve for x
    x = 1,993,136,021.50/50,987.66
  6. Step 6: Final answer
    x = 39,090.56

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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.