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Finding the Fourth Proportional to 411,036.40, 616,408.80 and 144,805.60

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Solution

The fourth proportional to 411,036.40, 616,408.80 and 144,805.60 is: 217,157.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,036.40 : 616,408.80 = 144,805.60 : x
  2. Step 2: Convert to fraction form
    411,036.40/616,408.80 = 144,805.60/x
  3. Step 3: Cross multiply
    411,036.40x = 616,408.80 × 144,805.60
  4. Step 4: Simplify right side
    411,036.40x = 89,259,446,129.28
  5. Step 5: Solve for x
    x = 89,259,446,129.28/411,036.40
  6. Step 6: Final answer
    x = 217,157.04

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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.