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Finding the Fourth Proportional to 46,809.20, 70,213.80 and 39,810.80

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Solution

The fourth proportional to 46,809.20, 70,213.80 and 39,810.80 is: 59,716.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,809.20 : 70,213.80 = 39,810.80 : x
  2. Step 2: Convert to fraction form
    46,809.20/70,213.80 = 39,810.80/x
  3. Step 3: Cross multiply
    46,809.20x = 70,213.80 × 39,810.80
  4. Step 4: Simplify right side
    46,809.20x = 2,795,267,549.04
  5. Step 5: Solve for x
    x = 2,795,267,549.04/46,809.20
  6. Step 6: Final answer
    x = 59,716.20

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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.