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Finding the Fourth Proportional to 718,915.11, 992,096.01 and 396,627.81

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Solution

The fourth proportional to 718,915.11, 992,096.01 and 396,627.81 is: 547,342.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,915.11 : 992,096.01 = 396,627.81 : x
  2. Step 2: Convert to fraction form
    718,915.11/992,096.01 = 396,627.81/x
  3. Step 3: Cross multiply
    718,915.11x = 992,096.01 × 396,627.81
  4. Step 4: Simplify right side
    718,915.11x = 393,492,867,756.04
  5. Step 5: Solve for x
    x = 393,492,867,756.04/718,915.11
  6. Step 6: Final answer
    x = 547,342.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.