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Finding the Fourth Proportional to 265,776,078.60, 398,664,117.90 and 265,776,078.60

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Solution

The fourth proportional to 265,776,078.60, 398,664,117.90 and 265,776,078.60 is: 398,664,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,776,078.60 : 398,664,117.90 = 265,776,078.60 : x
  2. Step 2: Convert to fraction form
    265,776,078.60/398,664,117.90 = 265,776,078.60/x
  3. Step 3: Cross multiply
    265,776,078.60x = 398,664,117.90 × 265,776,078.60
  4. Step 4: Simplify right side
    265,776,078.60x = 105,955,385,933,990,064
  5. Step 5: Solve for x
    x = 105,955,385,933,990,064/265,776,078.60
  6. Step 6: Final answer
    x = 398,664,117.90

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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.