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Finding the Fourth Proportional to 526,856.80, 789,766.80 and 260,658.40

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Solution

The fourth proportional to 526,856.80, 789,766.80 and 260,658.40 is: 390,731.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,856.80 : 789,766.80 = 260,658.40 : x
  2. Step 2: Convert to fraction form
    526,856.80/789,766.80 = 260,658.40/x
  3. Step 3: Cross multiply
    526,856.80x = 789,766.80 × 260,658.40
  4. Step 4: Simplify right side
    526,856.80x = 205,859,350,461.12
  5. Step 5: Solve for x
    x = 205,859,350,461.12/526,856.80
  6. Step 6: Final answer
    x = 390,731.13

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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.