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Finding the Fourth Proportional to 392,874,713.52, 589,149,931.56 and 134,110,776.20

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Solution

The fourth proportional to 392,874,713.52, 589,149,931.56 and 134,110,776.20 is: 201,110,817.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,874,713.52 : 589,149,931.56 = 134,110,776.20 : x
  2. Step 2: Convert to fraction form
    392,874,713.52/589,149,931.56 = 134,110,776.20/x
  3. Step 3: Cross multiply
    392,874,713.52x = 589,149,931.56 × 134,110,776.20
  4. Step 4: Simplify right side
    392,874,713.52x = 79,011,354,619,688,464
  5. Step 5: Solve for x
    x = 79,011,354,619,688,464/392,874,713.52
  6. Step 6: Final answer
    x = 201,110,817.01

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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.