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Finding the Fourth Proportional to 139,275.48, 208,572.49 and 125,796.93

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Solution

The fourth proportional to 139,275.48, 208,572.49 and 125,796.93 is: 188,387.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,275.48 : 208,572.49 = 125,796.93 : x
  2. Step 2: Convert to fraction form
    139,275.48/208,572.49 = 125,796.93/x
  3. Step 3: Cross multiply
    139,275.48x = 208,572.49 × 125,796.93
  4. Step 4: Simplify right side
    139,275.48x = 26,237,778,924.46
  5. Step 5: Solve for x
    x = 26,237,778,924.46/139,275.48
  6. Step 6: Final answer
    x = 188,387.64

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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.