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Finding the Fourth Proportional to 411,002.40, 616,503.60 and 115,514.40

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Solution

The fourth proportional to 411,002.40, 616,503.60 and 115,514.40 is: 173,271.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,002.40 : 616,503.60 = 115,514.40 : x
  2. Step 2: Convert to fraction form
    411,002.40/616,503.60 = 115,514.40/x
  3. Step 3: Cross multiply
    411,002.40x = 616,503.60 × 115,514.40
  4. Step 4: Simplify right side
    411,002.40x = 71,215,043,451.84
  5. Step 5: Solve for x
    x = 71,215,043,451.84/411,002.40
  6. Step 6: Final answer
    x = 173,271.60

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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.