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Finding the Fourth Proportional to 186,537.60, 279,703.80 and 127,440

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Solution

The fourth proportional to 186,537.60, 279,703.80 and 127,440 is: 191,089.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,537.60 : 279,703.80 = 127,440 : x
  2. Step 2: Convert to fraction form
    186,537.60/279,703.80 = 127,440/x
  3. Step 3: Cross multiply
    186,537.60x = 279,703.80 × 127,440
  4. Step 4: Simplify right side
    186,537.60x = 35,645,452,272
  5. Step 5: Solve for x
    x = 35,645,452,272/186,537.60
  6. Step 6: Final answer
    x = 191,089.91

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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.