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Finding the Fourth Proportional to 619,260.40, 865,914.80 and 619,260.40

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Solution

The fourth proportional to 619,260.40, 865,914.80 and 619,260.40 is: 865,914.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,260.40 : 865,914.80 = 619,260.40 : x
  2. Step 2: Convert to fraction form
    619,260.40/865,914.80 = 619,260.40/x
  3. Step 3: Cross multiply
    619,260.40x = 865,914.80 × 619,260.40
  4. Step 4: Simplify right side
    619,260.40x = 536,226,745,413.92
  5. Step 5: Solve for x
    x = 536,226,745,413.92/619,260.40
  6. Step 6: Final answer
    x = 865,914.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.