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Finding the Fourth Proportional to 655,609.20, 983,413.80 and 406,777.20

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Solution

The fourth proportional to 655,609.20, 983,413.80 and 406,777.20 is: 610,165.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,609.20 : 983,413.80 = 406,777.20 : x
  2. Step 2: Convert to fraction form
    655,609.20/983,413.80 = 406,777.20/x
  3. Step 3: Cross multiply
    655,609.20x = 983,413.80 × 406,777.20
  4. Step 4: Simplify right side
    655,609.20x = 400,030,312,005.36
  5. Step 5: Solve for x
    x = 400,030,312,005.36/655,609.20
  6. Step 6: Final answer
    x = 610,165.80

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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.