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Finding the Fourth Proportional to 186,641.60, 279,962.40 and 86,768.60

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Solution

The fourth proportional to 186,641.60, 279,962.40 and 86,768.60 is: 130,152.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,641.60 : 279,962.40 = 86,768.60 : x
  2. Step 2: Convert to fraction form
    186,641.60/279,962.40 = 86,768.60/x
  3. Step 3: Cross multiply
    186,641.60x = 279,962.40 × 86,768.60
  4. Step 4: Simplify right side
    186,641.60x = 24,291,945,500.64
  5. Step 5: Solve for x
    x = 24,291,945,500.64/186,641.60
  6. Step 6: Final answer
    x = 130,152.90

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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.