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Finding the Fourth Proportional to 92,720.52, 127,956.51 and 56,409.48

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Solution

The fourth proportional to 92,720.52, 127,956.51 and 56,409.48 is: 77,846.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,720.52 : 127,956.51 = 56,409.48 : x
  2. Step 2: Convert to fraction form
    92,720.52/127,956.51 = 56,409.48/x
  3. Step 3: Cross multiply
    92,720.52x = 127,956.51 × 56,409.48
  4. Step 4: Simplify right side
    92,720.52x = 7,217,960,191.71
  5. Step 5: Solve for x
    x = 7,217,960,191.71/92,720.52
  6. Step 6: Final answer
    x = 77,846.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.