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Finding the Fourth Proportional to 619,620.60, 929,430.90 and 551,969.40

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Solution

The fourth proportional to 619,620.60, 929,430.90 and 551,969.40 is: 827,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,620.60 : 929,430.90 = 551,969.40 : x
  2. Step 2: Convert to fraction form
    619,620.60/929,430.90 = 551,969.40/x
  3. Step 3: Cross multiply
    619,620.60x = 929,430.90 × 551,969.40
  4. Step 4: Simplify right side
    619,620.60x = 513,017,416,214.46
  5. Step 5: Solve for x
    x = 513,017,416,214.46/619,620.60
  6. Step 6: Final answer
    x = 827,954.10

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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.