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Finding the Fourth Proportional to 248,448.66, 342,867.50 and 139,572.10

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Solution

The fourth proportional to 248,448.66, 342,867.50 and 139,572.10 is: 192,614.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,448.66 : 342,867.50 = 139,572.10 : x
  2. Step 2: Convert to fraction form
    248,448.66/342,867.50 = 139,572.10/x
  3. Step 3: Cross multiply
    248,448.66x = 342,867.50 × 139,572.10
  4. Step 4: Simplify right side
    248,448.66x = 47,854,736,996.75
  5. Step 5: Solve for x
    x = 47,854,736,996.75/248,448.66
  6. Step 6: Final answer
    x = 192,614.19

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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.