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Finding the Fourth Proportional to 52,410.80, 78,616.20 and 47,226.80

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Solution

The fourth proportional to 52,410.80, 78,616.20 and 47,226.80 is: 70,840.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,410.80 : 78,616.20 = 47,226.80 : x
  2. Step 2: Convert to fraction form
    52,410.80/78,616.20 = 47,226.80/x
  3. Step 3: Cross multiply
    52,410.80x = 78,616.20 × 47,226.80
  4. Step 4: Simplify right side
    52,410.80x = 3,712,791,554.16
  5. Step 5: Solve for x
    x = 3,712,791,554.16/52,410.80
  6. Step 6: Final answer
    x = 70,840.20

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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.