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Finding the Fourth Proportional to 619,331.54, 928,774.55 and 214,413.80

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Solution

The fourth proportional to 619,331.54, 928,774.55 and 214,413.80 is: 321,543.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,331.54 : 928,774.55 = 214,413.80 : x
  2. Step 2: Convert to fraction form
    619,331.54/928,774.55 = 214,413.80/x
  3. Step 3: Cross multiply
    619,331.54x = 928,774.55 × 214,413.80
  4. Step 4: Simplify right side
    619,331.54x = 199,142,075,428.88
  5. Step 5: Solve for x
    x = 199,142,075,428.88/619,331.54
  6. Step 6: Final answer
    x = 321,543.57

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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.