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Finding the Fourth Proportional to 58,712.58, 88,078.65 and 19,259.10

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Solution

The fourth proportional to 58,712.58, 88,078.65 and 19,259.10 is: 28,891.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,712.58 : 88,078.65 = 19,259.10 : x
  2. Step 2: Convert to fraction form
    58,712.58/88,078.65 = 19,259.10/x
  3. Step 3: Cross multiply
    58,712.58x = 88,078.65 × 19,259.10
  4. Step 4: Simplify right side
    58,712.58x = 1,696,315,528.22
  5. Step 5: Solve for x
    x = 1,696,315,528.22/58,712.58
  6. Step 6: Final answer
    x = 28,891.86

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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.