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Finding the Fourth Proportional to 74,566.70, 102,903.81 and 42,303.50

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Solution

The fourth proportional to 74,566.70, 102,903.81 and 42,303.50 is: 58,379.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,566.70 : 102,903.81 = 42,303.50 : x
  2. Step 2: Convert to fraction form
    74,566.70/102,903.81 = 42,303.50/x
  3. Step 3: Cross multiply
    74,566.70x = 102,903.81 × 42,303.50
  4. Step 4: Simplify right side
    74,566.70x = 4,353,190,963.32
  5. Step 5: Solve for x
    x = 4,353,190,963.32/74,566.70
  6. Step 6: Final answer
    x = 58,379.83

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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.