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Finding the Fourth Proportional to 540,847.80, 811,271.70 and 341,393.40

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Solution

The fourth proportional to 540,847.80, 811,271.70 and 341,393.40 is: 512,090.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,847.80 : 811,271.70 = 341,393.40 : x
  2. Step 2: Convert to fraction form
    540,847.80/811,271.70 = 341,393.40/x
  3. Step 3: Cross multiply
    540,847.80x = 811,271.70 × 341,393.40
  4. Step 4: Simplify right side
    540,847.80x = 276,962,803,986.78
  5. Step 5: Solve for x
    x = 276,962,803,986.78/540,847.80
  6. Step 6: Final answer
    x = 512,090.10

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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.