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Finding the Fourth Proportional to 415,548.75, 623,426.81 and 120,060.75

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Solution

The fourth proportional to 415,548.75, 623,426.81 and 120,060.75 is: 180,121.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,548.75 : 623,426.81 = 120,060.75 : x
  2. Step 2: Convert to fraction form
    415,548.75/623,426.81 = 120,060.75/x
  3. Step 3: Cross multiply
    415,548.75x = 623,426.81 × 120,060.75
  4. Step 4: Simplify right side
    415,548.75x = 74,849,089,778.40
  5. Step 5: Solve for x
    x = 74,849,089,778.40/415,548.75
  6. Step 6: Final answer
    x = 180,121.08

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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.