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Finding the Fourth Proportional to 93,291.01, 128,639.86 and 63,023.79

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Solution

The fourth proportional to 93,291.01, 128,639.86 and 63,023.79 is: 86,904.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,291.01 : 128,639.86 = 63,023.79 : x
  2. Step 2: Convert to fraction form
    93,291.01/128,639.86 = 63,023.79/x
  3. Step 3: Cross multiply
    93,291.01x = 128,639.86 × 63,023.79
  4. Step 4: Simplify right side
    93,291.01x = 8,107,371,118.65
  5. Step 5: Solve for x
    x = 8,107,371,118.65/93,291.01
  6. Step 6: Final answer
    x = 86,904.10

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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.