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Finding the Fourth Proportional to 526,069.60, 789,622.80 and 260,130.40

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Solution

The fourth proportional to 526,069.60, 789,622.80 and 260,130.40 is: 390,451.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,069.60 : 789,622.80 = 260,130.40 : x
  2. Step 2: Convert to fraction form
    526,069.60/789,622.80 = 260,130.40/x
  3. Step 3: Cross multiply
    526,069.60x = 789,622.80 × 260,130.40
  4. Step 4: Simplify right side
    526,069.60x = 205,404,894,813.12
  5. Step 5: Solve for x
    x = 205,404,894,813.12/526,069.60
  6. Step 6: Final answer
    x = 390,451.94

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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.