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Finding the Fourth Proportional to 186,483.70, 279,725.55 and 156,959.20

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Solution

The fourth proportional to 186,483.70, 279,725.55 and 156,959.20 is: 235,438.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,483.70 : 279,725.55 = 156,959.20 : x
  2. Step 2: Convert to fraction form
    186,483.70/279,725.55 = 156,959.20/x
  3. Step 3: Cross multiply
    186,483.70x = 279,725.55 × 156,959.20
  4. Step 4: Simplify right side
    186,483.70x = 43,905,498,547.56
  5. Step 5: Solve for x
    x = 43,905,498,547.56/186,483.70
  6. Step 6: Final answer
    x = 235,438.80

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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.