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Finding the Fourth Proportional to 74,749.60, 103,179.45 and 44,544.40

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Solution

The fourth proportional to 74,749.60, 103,179.45 and 44,544.40 is: 61,486.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,749.60 : 103,179.45 = 44,544.40 : x
  2. Step 2: Convert to fraction form
    74,749.60/103,179.45 = 44,544.40/x
  3. Step 3: Cross multiply
    74,749.60x = 103,179.45 × 44,544.40
  4. Step 4: Simplify right side
    74,749.60x = 4,596,066,225.83
  5. Step 5: Solve for x
    x = 4,596,066,225.83/74,749.60
  6. Step 6: Final answer
    x = 61,486.16

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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.