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Finding the Fourth Proportional to 93,051.59, 128,370.01 and 57,220.43

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Solution

The fourth proportional to 93,051.59, 128,370.01 and 57,220.43 is: 78,938.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,051.59 : 128,370.01 = 57,220.43 : x
  2. Step 2: Convert to fraction form
    93,051.59/128,370.01 = 57,220.43/x
  3. Step 3: Cross multiply
    93,051.59x = 128,370.01 × 57,220.43
  4. Step 4: Simplify right side
    93,051.59x = 7,345,387,215.77
  5. Step 5: Solve for x
    x = 7,345,387,215.77/93,051.59
  6. Step 6: Final answer
    x = 78,938.87

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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.