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Finding the Fourth Proportional to 124,877.70, 186,769.80 and 111,646.35

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Solution

The fourth proportional to 124,877.70, 186,769.80 and 111,646.35 is: 166,980.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,877.70 : 186,769.80 = 111,646.35 : x
  2. Step 2: Convert to fraction form
    124,877.70/186,769.80 = 111,646.35/x
  3. Step 3: Cross multiply
    124,877.70x = 186,769.80 × 111,646.35
  4. Step 4: Simplify right side
    124,877.70x = 20,852,166,460.23
  5. Step 5: Solve for x
    x = 20,852,166,460.23/124,877.70
  6. Step 6: Final answer
    x = 166,980.71

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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.