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Finding the Fourth Proportional to 103,881.64, 143,345.70 and 58,549.48

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Solution

The fourth proportional to 103,881.64, 143,345.70 and 58,549.48 is: 80,792.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,881.64 : 143,345.70 = 58,549.48 : x
  2. Step 2: Convert to fraction form
    103,881.64/143,345.70 = 58,549.48/x
  3. Step 3: Cross multiply
    103,881.64x = 143,345.70 × 58,549.48
  4. Step 4: Simplify right side
    103,881.64x = 8,392,816,195.24
  5. Step 5: Solve for x
    x = 8,392,816,195.24/103,881.64
  6. Step 6: Final answer
    x = 80,792.10

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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.