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Finding the Fourth Proportional to 553,676.70, 830,515.05 and 543,179.10

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Solution

The fourth proportional to 553,676.70, 830,515.05 and 543,179.10 is: 814,768.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,676.70 : 830,515.05 = 543,179.10 : x
  2. Step 2: Convert to fraction form
    553,676.70/830,515.05 = 543,179.10/x
  3. Step 3: Cross multiply
    553,676.70x = 830,515.05 × 543,179.10
  4. Step 4: Simplify right side
    553,676.70x = 451,118,417,395.46
  5. Step 5: Solve for x
    x = 451,118,417,395.46/553,676.70
  6. Step 6: Final answer
    x = 814,768.65

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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.