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Finding the Fourth Proportional to 697,253.17, 962,168.93 and 391,300.98

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Solution

The fourth proportional to 697,253.17, 962,168.93 and 391,300.98 is: 539,972.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,253.17 : 962,168.93 = 391,300.98 : x
  2. Step 2: Convert to fraction form
    697,253.17/962,168.93 = 391,300.98/x
  3. Step 3: Cross multiply
    697,253.17x = 962,168.93 × 391,300.98
  4. Step 4: Simplify right side
    697,253.17x = 376,497,638,467.20
  5. Step 5: Solve for x
    x = 376,497,638,467.20/697,253.17
  6. Step 6: Final answer
    x = 539,972.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.