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Finding the Fourth Proportional to 98,916.66, 136,505.16 and 53,594.64

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Solution

The fourth proportional to 98,916.66, 136,505.16 and 53,594.64 is: 73,960.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,916.66 : 136,505.16 = 53,594.64 : x
  2. Step 2: Convert to fraction form
    98,916.66/136,505.16 = 53,594.64/x
  3. Step 3: Cross multiply
    98,916.66x = 136,505.16 × 53,594.64
  4. Step 4: Simplify right side
    98,916.66x = 7,315,944,908.34
  5. Step 5: Solve for x
    x = 7,315,944,908.34/98,916.66
  6. Step 6: Final answer
    x = 73,960.69

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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.