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Finding the Fourth Proportional to 93,461.26, 128,974.87 and 53,174.16

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Solution

The fourth proportional to 93,461.26, 128,974.87 and 53,174.16 is: 73,379.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,461.26 : 128,974.87 = 53,174.16 : x
  2. Step 2: Convert to fraction form
    93,461.26/128,974.87 = 53,174.16/x
  3. Step 3: Cross multiply
    93,461.26x = 128,974.87 × 53,174.16
  4. Step 4: Simplify right side
    93,461.26x = 6,858,130,373.36
  5. Step 5: Solve for x
    x = 6,858,130,373.36/93,461.26
  6. Step 6: Final answer
    x = 73,379.39

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1.5x scale

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.