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Finding the Fourth Proportional to 547,798.80, 821,698.20 and 153,814.80

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Solution

The fourth proportional to 547,798.80, 821,698.20 and 153,814.80 is: 230,722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,798.80 : 821,698.20 = 153,814.80 : x
  2. Step 2: Convert to fraction form
    547,798.80/821,698.20 = 153,814.80/x
  3. Step 3: Cross multiply
    547,798.80x = 821,698.20 × 153,814.80
  4. Step 4: Simplify right side
    547,798.80x = 126,389,344,293.36
  5. Step 5: Solve for x
    x = 126,389,344,293.36/547,798.80
  6. Step 6: Final answer
    x = 230,722.20

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Half scale
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Double scale
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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.