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Finding the Fourth Proportional to 668,212.47, 922,186.44 and 377,885.18

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Solution

The fourth proportional to 668,212.47, 922,186.44 and 377,885.18 is: 521,511.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,212.47 : 922,186.44 = 377,885.18 : x
  2. Step 2: Convert to fraction form
    668,212.47/922,186.44 = 377,885.18/x
  3. Step 3: Cross multiply
    668,212.47x = 922,186.44 × 377,885.18
  4. Step 4: Simplify right side
    668,212.47x = 348,480,584,262.03
  5. Step 5: Solve for x
    x = 348,480,584,262.03/668,212.47
  6. Step 6: Final answer
    x = 521,511.64

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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.