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Finding the Fourth Proportional to 70,602,630.84, 105,910,040.70 and 19,484,645.40

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Solution

The fourth proportional to 70,602,630.84, 105,910,040.70 and 19,484,645.40 is: 29,228,650.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,602,630.84 : 105,910,040.70 = 19,484,645.40 : x
  2. Step 2: Convert to fraction form
    70,602,630.84/105,910,040.70 = 19,484,645.40/x
  3. Step 3: Cross multiply
    70,602,630.84x = 105,910,040.70 × 19,484,645.40
  4. Step 4: Simplify right side
    70,602,630.84x = 2,063,619,587,339,067.75
  5. Step 5: Solve for x
    x = 2,063,619,587,339,067.75/70,602,630.84
  6. Step 6: Final answer
    x = 29,228,650.02

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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.