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Finding the Fourth Proportional to 190,643,856.60, 285,965,784.90 and 190,643,856.60

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Solution

The fourth proportional to 190,643,856.60, 285,965,784.90 and 190,643,856.60 is: 285,965,784.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,643,856.60 : 285,965,784.90 = 190,643,856.60 : x
  2. Step 2: Convert to fraction form
    190,643,856.60/285,965,784.90 = 190,643,856.60/x
  3. Step 3: Cross multiply
    190,643,856.60x = 285,965,784.90 × 190,643,856.60
  4. Step 4: Simplify right side
    190,643,856.60x = 54,517,620,088,982,040
  5. Step 5: Solve for x
    x = 54,517,620,088,982,040/190,643,856.60
  6. Step 6: Final answer
    x = 285,965,784.90

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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.