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Finding the Fourth Proportional to 619,366.60, 928,582.27 and 406,188.21

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Solution

The fourth proportional to 619,366.60, 928,582.27 and 406,188.21 is: 608,975.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,366.60 : 928,582.27 = 406,188.21 : x
  2. Step 2: Convert to fraction form
    619,366.60/928,582.27 = 406,188.21/x
  3. Step 3: Cross multiply
    619,366.60x = 928,582.27 × 406,188.21
  4. Step 4: Simplify right side
    619,366.60x = 377,179,170,089.04
  5. Step 5: Solve for x
    x = 377,179,170,089.04/619,366.60
  6. Step 6: Final answer
    x = 608,975.64

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Double scale
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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.