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Finding the Fourth Proportional to 186,469.60, 279,704.40 and 53,357.80

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Solution

The fourth proportional to 186,469.60, 279,704.40 and 53,357.80 is: 80,036.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,469.60 : 279,704.40 = 53,357.80 : x
  2. Step 2: Convert to fraction form
    186,469.60/279,704.40 = 53,357.80/x
  3. Step 3: Cross multiply
    186,469.60x = 279,704.40 × 53,357.80
  4. Step 4: Simplify right side
    186,469.60x = 14,924,411,434.32
  5. Step 5: Solve for x
    x = 14,924,411,434.32/186,469.60
  6. Step 6: Final answer
    x = 80,036.70

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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.