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Finding the Fourth Proportional to 93,210.11, 128,585.97 and 63,005.97

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Solution

The fourth proportional to 93,210.11, 128,585.97 and 63,005.97 is: 86,918.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,210.11 : 128,585.97 = 63,005.97 : x
  2. Step 2: Convert to fraction form
    93,210.11/128,585.97 = 63,005.97/x
  3. Step 3: Cross multiply
    93,210.11x = 128,585.97 × 63,005.97
  4. Step 4: Simplify right side
    93,210.11x = 8,101,683,768.24
  5. Step 5: Solve for x
    x = 8,101,683,768.24/93,210.11
  6. Step 6: Final answer
    x = 86,918.51

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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.