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Finding the Fourth Proportional to 56,803.80, 85,205.70 and 27,206.40

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Solution

The fourth proportional to 56,803.80, 85,205.70 and 27,206.40 is: 40,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,803.80 : 85,205.70 = 27,206.40 : x
  2. Step 2: Convert to fraction form
    56,803.80/85,205.70 = 27,206.40/x
  3. Step 3: Cross multiply
    56,803.80x = 85,205.70 × 27,206.40
  4. Step 4: Simplify right side
    56,803.80x = 2,318,140,356.48
  5. Step 5: Solve for x
    x = 2,318,140,356.48/56,803.80
  6. Step 6: Final answer
    x = 40,809.60

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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.