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Finding the Fourth Proportional to 710,107,425.72, 979,863,365.64 and 392,524,768.59

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Solution

The fourth proportional to 710,107,425.72, 979,863,365.64 and 392,524,768.59 is: 541,637,260.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,107,425.72 : 979,863,365.64 = 392,524,768.59 : x
  2. Step 2: Convert to fraction form
    710,107,425.72/979,863,365.64 = 392,524,768.59/x
  3. Step 3: Cross multiply
    710,107,425.72x = 979,863,365.64 × 392,524,768.59
  4. Step 4: Simplify right side
    710,107,425.72x = 384,620,640,847,659,520
  5. Step 5: Solve for x
    x = 384,620,640,847,659,520/710,107,425.72
  6. Step 6: Final answer
    x = 541,637,260.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.