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Finding the Fourth Proportional to 69,117,598, 103,693,193.16 and 21,248,542

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Solution

The fourth proportional to 69,117,598, 103,693,193.16 and 21,248,542 is: 31,877,976.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,117,598 : 103,693,193.16 = 21,248,542 : x
  2. Step 2: Convert to fraction form
    69,117,598/103,693,193.16 = 21,248,542/x
  3. Step 3: Cross multiply
    69,117,598x = 103,693,193.16 × 21,248,542
  4. Step 4: Simplify right side
    69,117,598x = 2,203,329,169,974,372.75
  5. Step 5: Solve for x
    x = 2,203,329,169,974,372.75/69,117,598
  6. Step 6: Final answer
    x = 31,877,976.58

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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.