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Finding the Fourth Proportional to 84,790.79, 117,005.43 and 47,062.07

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Solution

The fourth proportional to 84,790.79, 117,005.43 and 47,062.07 is: 64,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,790.79 : 117,005.43 = 47,062.07 : x
  2. Step 2: Convert to fraction form
    84,790.79/117,005.43 = 47,062.07/x
  3. Step 3: Cross multiply
    84,790.79x = 117,005.43 × 47,062.07
  4. Step 4: Simplify right side
    84,790.79x = 5,506,516,916.70
  5. Step 5: Solve for x
    x = 5,506,516,916.70/84,790.79
  6. Step 6: Final answer
    x = 64,942.40

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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.