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Finding the Fourth Proportional to 49,312.40, 73,968.60 and 40,672.40

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Solution

The fourth proportional to 49,312.40, 73,968.60 and 40,672.40 is: 61,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,312.40 : 73,968.60 = 40,672.40 : x
  2. Step 2: Convert to fraction form
    49,312.40/73,968.60 = 40,672.40/x
  3. Step 3: Cross multiply
    49,312.40x = 73,968.60 × 40,672.40
  4. Step 4: Simplify right side
    49,312.40x = 3,008,480,486.64
  5. Step 5: Solve for x
    x = 3,008,480,486.64/49,312.40
  6. Step 6: Final answer
    x = 61,008.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.