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Finding the Fourth Proportional to 56,216.40, 84,389.40 and 34,054.80

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Solution

The fourth proportional to 56,216.40, 84,389.40 and 34,054.80 is: 51,121.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,216.40 : 84,389.40 = 34,054.80 : x
  2. Step 2: Convert to fraction form
    56,216.40/84,389.40 = 34,054.80/x
  3. Step 3: Cross multiply
    56,216.40x = 84,389.40 × 34,054.80
  4. Step 4: Simplify right side
    56,216.40x = 2,873,864,139.12
  5. Step 5: Solve for x
    x = 2,873,864,139.12/56,216.40
  6. Step 6: Final answer
    x = 51,121.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.