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Finding the Fourth Proportional to 74,970.40, 103,442.10 and 44,765.50

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Solution

The fourth proportional to 74,970.40, 103,442.10 and 44,765.50 is: 61,766.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,970.40 : 103,442.10 = 44,765.50 : x
  2. Step 2: Convert to fraction form
    74,970.40/103,442.10 = 44,765.50/x
  3. Step 3: Cross multiply
    74,970.40x = 103,442.10 × 44,765.50
  4. Step 4: Simplify right side
    74,970.40x = 4,630,637,327.55
  5. Step 5: Solve for x
    x = 4,630,637,327.55/74,970.40
  6. Step 6: Final answer
    x = 61,766.21

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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.