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Finding the Fourth Proportional to 78,530.16, 108,369.68 and 44,994

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Solution

The fourth proportional to 78,530.16, 108,369.68 and 44,994 is: 62,090.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,530.16 : 108,369.68 = 44,994 : x
  2. Step 2: Convert to fraction form
    78,530.16/108,369.68 = 44,994/x
  3. Step 3: Cross multiply
    78,530.16x = 108,369.68 × 44,994
  4. Step 4: Simplify right side
    78,530.16x = 4,875,985,381.92
  5. Step 5: Solve for x
    x = 4,875,985,381.92/78,530.16
  6. Step 6: Final answer
    x = 62,090.61

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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.