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Finding the Fourth Proportional to 58,833.76, 88,139.28 and 45,621.28

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Solution

The fourth proportional to 58,833.76, 88,139.28 and 45,621.28 is: 68,345.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,833.76 : 88,139.28 = 45,621.28 : x
  2. Step 2: Convert to fraction form
    58,833.76/88,139.28 = 45,621.28/x
  3. Step 3: Cross multiply
    58,833.76x = 88,139.28 × 45,621.28
  4. Step 4: Simplify right side
    58,833.76x = 4,021,026,771.88
  5. Step 5: Solve for x
    x = 4,021,026,771.88/58,833.76
  6. Step 6: Final answer
    x = 68,345.57

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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.