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Finding the Fourth Proportional to 93,345.39, 128,828.22 and 57,039.37

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Solution

The fourth proportional to 93,345.39, 128,828.22 and 57,039.37 is: 78,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,345.39 : 128,828.22 = 57,039.37 : x
  2. Step 2: Convert to fraction form
    93,345.39/128,828.22 = 57,039.37/x
  3. Step 3: Cross multiply
    93,345.39x = 128,828.22 × 57,039.37
  4. Step 4: Simplify right side
    93,345.39x = 7,348,280,454.16
  5. Step 5: Solve for x
    x = 7,348,280,454.16/93,345.39
  6. Step 6: Final answer
    x = 78,721.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.