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Finding the Fourth Proportional to 619,130.40, 927,140.40 and 407,623.20

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Solution

The fourth proportional to 619,130.40, 927,140.40 and 407,623.20 is: 610,410.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,130.40 : 927,140.40 = 407,623.20 : x
  2. Step 2: Convert to fraction form
    619,130.40/927,140.40 = 407,623.20/x
  3. Step 3: Cross multiply
    619,130.40x = 927,140.40 × 407,623.20
  4. Step 4: Simplify right side
    619,130.40x = 377,923,936,697.28
  5. Step 5: Solve for x
    x = 377,923,936,697.28/619,130.40
  6. Step 6: Final answer
    x = 610,410.89

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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.