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Finding the Fourth Proportional to 74,920.30, 112,510.05 and 48,741.10

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Solution

The fourth proportional to 74,920.30, 112,510.05 and 48,741.10 is: 73,195.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,920.30 : 112,510.05 = 48,741.10 : x
  2. Step 2: Convert to fraction form
    74,920.30/112,510.05 = 48,741.10/x
  3. Step 3: Cross multiply
    74,920.30x = 112,510.05 × 48,741.10
  4. Step 4: Simplify right side
    74,920.30x = 5,483,863,598.06
  5. Step 5: Solve for x
    x = 5,483,863,598.06/74,920.30
  6. Step 6: Final answer
    x = 73,195.96

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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.