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Finding the Fourth Proportional to 265,210,479.60, 397,815,719.40 and 265,210,479.60

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Solution

The fourth proportional to 265,210,479.60, 397,815,719.40 and 265,210,479.60 is: 397,815,719.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,210,479.60 : 397,815,719.40 = 265,210,479.60 : x
  2. Step 2: Convert to fraction form
    265,210,479.60/397,815,719.40 = 265,210,479.60/x
  3. Step 3: Cross multiply
    265,210,479.60x = 397,815,719.40 × 265,210,479.60
  4. Step 4: Simplify right side
    265,210,479.60x = 105,504,897,734,493,008
  5. Step 5: Solve for x
    x = 105,504,897,734,493,008/265,210,479.60
  6. Step 6: Final answer
    x = 397,815,719.40

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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.