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Finding the Fourth Proportional to 473,210.80, 709,816.20 and 140,786.80

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Solution

The fourth proportional to 473,210.80, 709,816.20 and 140,786.80 is: 211,180.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,210.80 : 709,816.20 = 140,786.80 : x
  2. Step 2: Convert to fraction form
    473,210.80/709,816.20 = 140,786.80/x
  3. Step 3: Cross multiply
    473,210.80x = 709,816.20 × 140,786.80
  4. Step 4: Simplify right side
    473,210.80x = 99,932,751,386.16
  5. Step 5: Solve for x
    x = 99,932,751,386.16/473,210.80
  6. Step 6: Final answer
    x = 211,180.20

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Similar ratio
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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.