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Finding the Fourth Proportional to 53,287.80, 79,931.70 and 33,604.80

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Solution

The fourth proportional to 53,287.80, 79,931.70 and 33,604.80 is: 50,407.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,287.80 : 79,931.70 = 33,604.80 : x
  2. Step 2: Convert to fraction form
    53,287.80/79,931.70 = 33,604.80/x
  3. Step 3: Cross multiply
    53,287.80x = 79,931.70 × 33,604.80
  4. Step 4: Simplify right side
    53,287.80x = 2,686,088,792.16
  5. Step 5: Solve for x
    x = 2,686,088,792.16/53,287.80
  6. Step 6: Final answer
    x = 50,407.20

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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.