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Finding the Fourth Proportional to 92,916.78, 128,206.23 and 56,593.86

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Solution

The fourth proportional to 92,916.78, 128,206.23 and 56,593.86 is: 78,088.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,916.78 : 128,206.23 = 56,593.86 : x
  2. Step 2: Convert to fraction form
    92,916.78/128,206.23 = 56,593.86/x
  3. Step 3: Cross multiply
    92,916.78x = 128,206.23 × 56,593.86
  4. Step 4: Simplify right side
    92,916.78x = 7,255,685,431.75
  5. Step 5: Solve for x
    x = 7,255,685,431.75/92,916.78
  6. Step 6: Final answer
    x = 78,088.00

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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.