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Finding the Fourth Proportional to 554,378.10, 831,567.15 and 355,087.73

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Solution

The fourth proportional to 554,378.10, 831,567.15 and 355,087.73 is: 532,631.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,378.10 : 831,567.15 = 355,087.73 : x
  2. Step 2: Convert to fraction form
    554,378.10/831,567.15 = 355,087.73/x
  3. Step 3: Cross multiply
    554,378.10x = 831,567.15 × 355,087.73
  4. Step 4: Simplify right side
    554,378.10x = 295,279,287,478.23
  5. Step 5: Solve for x
    x = 295,279,287,478.23/554,378.10
  6. Step 6: Final answer
    x = 532,631.59

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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.