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Finding the Fourth Proportional to 488,448,700.80, 732,673,051.20 and 485,047,478.40

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Solution

The fourth proportional to 488,448,700.80, 732,673,051.20 and 485,047,478.40 is: 727,571,217.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,448,700.80 : 732,673,051.20 = 485,047,478.40 : x
  2. Step 2: Convert to fraction form
    488,448,700.80/732,673,051.20 = 485,047,478.40/x
  3. Step 3: Cross multiply
    488,448,700.80x = 732,673,051.20 × 485,047,478.40
  4. Step 4: Simplify right side
    488,448,700.80x = 355,381,215,976,194,112
  5. Step 5: Solve for x
    x = 355,381,215,976,194,112/488,448,700.80
  6. Step 6: Final answer
    x = 727,571,217.60

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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.