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Finding the Fourth Proportional to 74,386.56, 102,654.18 and 40,852.56

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Solution

The fourth proportional to 74,386.56, 102,654.18 and 40,852.56 is: 56,376.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,386.56 : 102,654.18 = 40,852.56 : x
  2. Step 2: Convert to fraction form
    74,386.56/102,654.18 = 40,852.56/x
  3. Step 3: Cross multiply
    74,386.56x = 102,654.18 × 40,852.56
  4. Step 4: Simplify right side
    74,386.56x = 4,193,686,047.70
  5. Step 5: Solve for x
    x = 4,193,686,047.70/74,386.56
  6. Step 6: Final answer
    x = 56,376.93

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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.