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Finding the Fourth Proportional to 58,058.66, 87,100.29 and 18,643.45

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Solution

The fourth proportional to 58,058.66, 87,100.29 and 18,643.45 is: 27,969.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,058.66 : 87,100.29 = 18,643.45 : x
  2. Step 2: Convert to fraction form
    58,058.66/87,100.29 = 18,643.45/x
  3. Step 3: Cross multiply
    58,058.66x = 87,100.29 × 18,643.45
  4. Step 4: Simplify right side
    58,058.66x = 1,623,849,901.60
  5. Step 5: Solve for x
    x = 1,623,849,901.60/58,058.66
  6. Step 6: Final answer
    x = 27,969.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.