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Finding the Fourth Proportional to 58,908.51, 88,368.91 and 18,917.39

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Solution

The fourth proportional to 58,908.51, 88,368.91 and 18,917.39 is: 28,378.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,908.51 : 88,368.91 = 18,917.39 : x
  2. Step 2: Convert to fraction form
    58,908.51/88,368.91 = 18,917.39/x
  3. Step 3: Cross multiply
    58,908.51x = 88,368.91 × 18,917.39
  4. Step 4: Simplify right side
    58,908.51x = 1,671,709,039.76
  5. Step 5: Solve for x
    x = 1,671,709,039.76/58,908.51
  6. Step 6: Final answer
    x = 28,378.06

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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.