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Finding the Fourth Proportional to 532,992,128.80, 799,488,193.20 and 411,910,477.60

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Solution

The fourth proportional to 532,992,128.80, 799,488,193.20 and 411,910,477.60 is: 617,865,716.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,992,128.80 : 799,488,193.20 = 411,910,477.60 : x
  2. Step 2: Convert to fraction form
    532,992,128.80/799,488,193.20 = 411,910,477.60/x
  3. Step 3: Cross multiply
    532,992,128.80x = 799,488,193.20 × 411,910,477.60
  4. Step 4: Simplify right side
    532,992,128.80x = 329,317,563,496,573,120
  5. Step 5: Solve for x
    x = 329,317,563,496,573,120/532,992,128.80
  6. Step 6: Final answer
    x = 617,865,716.40

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Similar ratio
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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.