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Finding the Fourth Proportional to 526,535.40, 789,803.10 and 260,814.90

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Solution

The fourth proportional to 526,535.40, 789,803.10 and 260,814.90 is: 391,222.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,535.40 : 789,803.10 = 260,814.90 : x
  2. Step 2: Convert to fraction form
    526,535.40/789,803.10 = 260,814.90/x
  3. Step 3: Cross multiply
    526,535.40x = 789,803.10 × 260,814.90
  4. Step 4: Simplify right side
    526,535.40x = 205,992,416,546.19
  5. Step 5: Solve for x
    x = 205,992,416,546.19/526,535.40
  6. Step 6: Final answer
    x = 391,222.35

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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.