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Finding the Fourth Proportional to 105,663.92, 145,807.88 and 60,943.28

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Solution

The fourth proportional to 105,663.92, 145,807.88 and 60,943.28 is: 84,096.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,663.92 : 145,807.88 = 60,943.28 : x
  2. Step 2: Convert to fraction form
    105,663.92/145,807.88 = 60,943.28/x
  3. Step 3: Cross multiply
    105,663.92x = 145,807.88 × 60,943.28
  4. Step 4: Simplify right side
    105,663.92x = 8,886,010,457.05
  5. Step 5: Solve for x
    x = 8,886,010,457.05/105,663.92
  6. Step 6: Final answer
    x = 84,096.92

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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.