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Finding the Fourth Proportional to 93,045.78, 128,402.82 and 50,605.02

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Solution

The fourth proportional to 93,045.78, 128,402.82 and 50,605.02 is: 69,834.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,045.78 : 128,402.82 = 50,605.02 : x
  2. Step 2: Convert to fraction form
    93,045.78/128,402.82 = 50,605.02/x
  3. Step 3: Cross multiply
    93,045.78x = 128,402.82 × 50,605.02
  4. Step 4: Simplify right side
    93,045.78x = 6,497,827,274.16
  5. Step 5: Solve for x
    x = 6,497,827,274.16/93,045.78
  6. Step 6: Final answer
    x = 69,834.73

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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.