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Finding the Fourth Proportional to 93,458.10, 128,970.52 and 53,171.00

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Solution

The fourth proportional to 93,458.10, 128,970.52 and 53,171.00 is: 73,375.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,458.10 : 128,970.52 = 53,171.00 : x
  2. Step 2: Convert to fraction form
    93,458.10/128,970.52 = 53,171.00/x
  3. Step 3: Cross multiply
    93,458.10x = 128,970.52 × 53,171.00
  4. Step 4: Simplify right side
    93,458.10x = 6,857,490,874.07
  5. Step 5: Solve for x
    x = 6,857,490,874.07/93,458.10
  6. Step 6: Final answer
    x = 73,375.03

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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.