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Finding the Fourth Proportional to 93,064.87, 128,458.74 and 52,805.31

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Solution

The fourth proportional to 93,064.87, 128,458.74 and 52,805.31 is: 72,887.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,064.87 : 128,458.74 = 52,805.31 : x
  2. Step 2: Convert to fraction form
    93,064.87/128,458.74 = 52,805.31/x
  3. Step 3: Cross multiply
    93,064.87x = 128,458.74 × 52,805.31
  4. Step 4: Simplify right side
    93,064.87x = 6,783,303,587.91
  5. Step 5: Solve for x
    x = 6,783,303,587.91/93,064.87
  6. Step 6: Final answer
    x = 72,887.91

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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.