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Finding the Fourth Proportional to 75,716.98, 104,484.43 and 45,484.40

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Solution

The fourth proportional to 75,716.98, 104,484.43 and 45,484.40 is: 62,765.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,716.98 : 104,484.43 = 45,484.40 : x
  2. Step 2: Convert to fraction form
    75,716.98/104,484.43 = 45,484.40/x
  3. Step 3: Cross multiply
    75,716.98x = 104,484.43 × 45,484.40
  4. Step 4: Simplify right side
    75,716.98x = 4,752,411,925.96
  5. Step 5: Solve for x
    x = 4,752,411,925.96/75,716.98
  6. Step 6: Final answer
    x = 62,765.47

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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.