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Finding the Fourth Proportional to 619,413.80, 928,890.30 and 245,359.40

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Solution

The fourth proportional to 619,413.80, 928,890.30 and 245,359.40 is: 367,947.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,413.80 : 928,890.30 = 245,359.40 : x
  2. Step 2: Convert to fraction form
    619,413.80/928,890.30 = 245,359.40/x
  3. Step 3: Cross multiply
    619,413.80x = 928,890.30 × 245,359.40
  4. Step 4: Simplify right side
    619,413.80x = 227,911,966,673.82
  5. Step 5: Solve for x
    x = 227,911,966,673.82/619,413.80
  6. Step 6: Final answer
    x = 367,947.83

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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.