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Finding the Fourth Proportional to 415,804.10, 623,783.10 and 131,566.22

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Solution

The fourth proportional to 415,804.10, 623,783.10 and 131,566.22 is: 197,373.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,804.10 : 623,783.10 = 131,566.22 : x
  2. Step 2: Convert to fraction form
    415,804.10/623,783.10 = 131,566.22/x
  3. Step 3: Cross multiply
    415,804.10x = 623,783.10 × 131,566.22
  4. Step 4: Simplify right side
    415,804.10x = 82,068,781,447.97
  5. Step 5: Solve for x
    x = 82,068,781,447.97/415,804.10
  6. Step 6: Final answer
    x = 197,373.67

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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.