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Finding the Fourth Proportional to 661,505.70, 992,258.55 and 461,403.30

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Solution

The fourth proportional to 661,505.70, 992,258.55 and 461,403.30 is: 692,104.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,505.70 : 992,258.55 = 461,403.30 : x
  2. Step 2: Convert to fraction form
    661,505.70/992,258.55 = 461,403.30/x
  3. Step 3: Cross multiply
    661,505.70x = 992,258.55 × 461,403.30
  4. Step 4: Simplify right side
    661,505.70x = 457,831,369,423.22
  5. Step 5: Solve for x
    x = 457,831,369,423.22/661,505.70
  6. Step 6: Final answer
    x = 692,104.95

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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.