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Finding the Fourth Proportional to 131,985,653.15, 197,978,480.03 and 70,388,194.67

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Solution

The fourth proportional to 131,985,653.15, 197,978,480.03 and 70,388,194.67 is: 105,582,292.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,985,653.15 : 197,978,480.03 = 70,388,194.67 : x
  2. Step 2: Convert to fraction form
    131,985,653.15/197,978,480.03 = 70,388,194.67/x
  3. Step 3: Cross multiply
    131,985,653.15x = 197,978,480.03 × 70,388,194.67
  4. Step 4: Simplify right side
    131,985,653.15x = 13,935,347,792,965,352
  5. Step 5: Solve for x
    x = 13,935,347,792,965,352/131,985,653.15
  6. Step 6: Final answer
    x = 105,582,292.17

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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.