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Finding the Fourth Proportional to 664,296.40, 996,444.60 and 619,681.60

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Solution

The fourth proportional to 664,296.40, 996,444.60 and 619,681.60 is: 929,522.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,296.40 : 996,444.60 = 619,681.60 : x
  2. Step 2: Convert to fraction form
    664,296.40/996,444.60 = 619,681.60/x
  3. Step 3: Cross multiply
    664,296.40x = 996,444.60 × 619,681.60
  4. Step 4: Simplify right side
    664,296.40x = 617,478,384,039.36
  5. Step 5: Solve for x
    x = 617,478,384,039.36/664,296.40
  6. Step 6: Final answer
    x = 929,522.40

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Double scale
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Similar ratio
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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.