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Finding the Fourth Proportional to 664,258.40, 996,387.60 and 619,643.60

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Solution

The fourth proportional to 664,258.40, 996,387.60 and 619,643.60 is: 929,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,258.40 : 996,387.60 = 619,643.60 : x
  2. Step 2: Convert to fraction form
    664,258.40/996,387.60 = 619,643.60/x
  3. Step 3: Cross multiply
    664,258.40x = 996,387.60 × 619,643.60
  4. Step 4: Simplify right side
    664,258.40x = 617,405,199,459.36
  5. Step 5: Solve for x
    x = 617,405,199,459.36/664,258.40
  6. Step 6: Final answer
    x = 929,465.40

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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.