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Finding the Fourth Proportional to 12,390,196,772.80, 17,359,174,932.80 and 12,390,196,772.80

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Solution

The fourth proportional to 12,390,196,772.80, 17,359,174,932.80 and 12,390,196,772.80 is: 17,359,174,932.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390,196,772.80 : 17,359,174,932.80 = 12,390,196,772.80 : x
  2. Step 2: Convert to fraction form
    12,390,196,772.80/17,359,174,932.80 = 12,390,196,772.80/x
  3. Step 3: Cross multiply
    12,390,196,772.80x = 17,359,174,932.80 × 12,390,196,772.80
  4. Step 4: Simplify right side
    12,390,196,772.80x = 215,083,593,230,849,179,648
  5. Step 5: Solve for x
    x = 215,083,593,230,849,179,648/12,390,196,772.80
  6. Step 6: Final answer
    x = 17,359,174,932.80

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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.