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Finding the Fourth Proportional to 540,768.80, 811,153.20 and 470,784.80

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Solution

The fourth proportional to 540,768.80, 811,153.20 and 470,784.80 is: 706,177.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,768.80 : 811,153.20 = 470,784.80 : x
  2. Step 2: Convert to fraction form
    540,768.80/811,153.20 = 470,784.80/x
  3. Step 3: Cross multiply
    540,768.80x = 811,153.20 × 470,784.80
  4. Step 4: Simplify right side
    540,768.80x = 381,878,597,031.36
  5. Step 5: Solve for x
    x = 381,878,597,031.36/540,768.80
  6. Step 6: Final answer
    x = 706,177.20

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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.