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Finding the Fourth Proportional to 415,804.36, 623,783.46 and 131,566.47

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Solution

The fourth proportional to 415,804.36, 623,783.46 and 131,566.47 is: 197,374.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,804.36 : 623,783.46 = 131,566.47 : x
  2. Step 2: Convert to fraction form
    415,804.36/623,783.46 = 131,566.47/x
  3. Step 3: Cross multiply
    415,804.36x = 623,783.46 × 131,566.47
  4. Step 4: Simplify right side
    415,804.36x = 82,068,987,876.59
  5. Step 5: Solve for x
    x = 82,068,987,876.59/415,804.36
  6. Step 6: Final answer
    x = 197,374.04

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1.5x scale

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.