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Finding the Fourth Proportional to 265,716,099.20, 398,574,148.80 and 265,716,099.20

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Solution

The fourth proportional to 265,716,099.20, 398,574,148.80 and 265,716,099.20 is: 398,574,148.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,716,099.20 : 398,574,148.80 = 265,716,099.20 : x
  2. Step 2: Convert to fraction form
    265,716,099.20/398,574,148.80 = 265,716,099.20/x
  3. Step 3: Cross multiply
    265,716,099.20x = 398,574,148.80 × 265,716,099.20
  4. Step 4: Simplify right side
    265,716,099.20x = 105,907,568,061,096,352
  5. Step 5: Solve for x
    x = 105,907,568,061,096,352/265,716,099.20
  6. Step 6: Final answer
    x = 398,574,148.80

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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.