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Finding the Fourth Proportional to 74,298.96, 102,530.55 and 45,216.41

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Solution

The fourth proportional to 74,298.96, 102,530.55 and 45,216.41 is: 62,397.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,298.96 : 102,530.55 = 45,216.41 : x
  2. Step 2: Convert to fraction form
    74,298.96/102,530.55 = 45,216.41/x
  3. Step 3: Cross multiply
    74,298.96x = 102,530.55 × 45,216.41
  4. Step 4: Simplify right side
    74,298.96x = 4,636,062,873.67
  5. Step 5: Solve for x
    x = 4,636,062,873.67/74,298.96
  6. Step 6: Final answer
    x = 62,397.41

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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.