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Finding the Fourth Proportional to 523,870.20, 786,150.90 and 191,446.20

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Solution

The fourth proportional to 523,870.20, 786,150.90 and 191,446.20 is: 287,295.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,870.20 : 786,150.90 = 191,446.20 : x
  2. Step 2: Convert to fraction form
    523,870.20/786,150.90 = 191,446.20/x
  3. Step 3: Cross multiply
    523,870.20x = 786,150.90 × 191,446.20
  4. Step 4: Simplify right side
    523,870.20x = 150,505,602,431.58
  5. Step 5: Solve for x
    x = 150,505,602,431.58/523,870.20
  6. Step 6: Final answer
    x = 287,295.60

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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.