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Finding the Fourth Proportional to 92,992.48, 128,332.28 and 56,696.02

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Solution

The fourth proportional to 92,992.48, 128,332.28 and 56,696.02 is: 78,242.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,992.48 : 128,332.28 = 56,696.02 : x
  2. Step 2: Convert to fraction form
    92,992.48/128,332.28 = 56,696.02/x
  3. Step 3: Cross multiply
    92,992.48x = 128,332.28 × 56,696.02
  4. Step 4: Simplify right side
    92,992.48x = 7,275,929,513.53
  5. Step 5: Solve for x
    x = 7,275,929,513.53/92,992.48
  6. Step 6: Final answer
    x = 78,242.13

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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.