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Finding the Fourth Proportional to 58,756.86, 88,135.14 and 21,316.86

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Solution

The fourth proportional to 58,756.86, 88,135.14 and 21,316.86 is: 31,975.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,756.86 : 88,135.14 = 21,316.86 : x
  2. Step 2: Convert to fraction form
    58,756.86/88,135.14 = 21,316.86/x
  3. Step 3: Cross multiply
    58,756.86x = 88,135.14 × 21,316.86
  4. Step 4: Simplify right side
    58,756.86x = 1,878,764,440.46
  5. Step 5: Solve for x
    x = 1,878,764,440.46/58,756.86
  6. Step 6: Final answer
    x = 31,975.24

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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.