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Finding the Fourth Proportional to 74,299.50, 102,530.58 and 42,466.50

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Solution

The fourth proportional to 74,299.50, 102,530.58 and 42,466.50 is: 58,602.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,299.50 : 102,530.58 = 42,466.50 : x
  2. Step 2: Convert to fraction form
    74,299.50/102,530.58 = 42,466.50/x
  3. Step 3: Cross multiply
    74,299.50x = 102,530.58 × 42,466.50
  4. Step 4: Simplify right side
    74,299.50x = 4,354,114,875.57
  5. Step 5: Solve for x
    x = 4,354,114,875.57/74,299.50
  6. Step 6: Final answer
    x = 58,602.21

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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.