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Finding the Fourth Proportional to 139,968,145.70, 196,156,957.90 and 139,968,145.70

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Solution

The fourth proportional to 139,968,145.70, 196,156,957.90 and 139,968,145.70 is: 196,156,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,145.70 : 196,156,957.90 = 139,968,145.70 : x
  2. Step 2: Convert to fraction form
    139,968,145.70/196,156,957.90 = 139,968,145.70/x
  3. Step 3: Cross multiply
    139,968,145.70x = 196,156,957.90 × 139,968,145.70
  4. Step 4: Simplify right side
    139,968,145.70x = 27,455,725,663,415,964
  5. Step 5: Solve for x
    x = 27,455,725,663,415,964/139,968,145.70
  6. Step 6: Final answer
    x = 196,156,957.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.