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Finding the Fourth Proportional to 551,638,440.80, 827,457,661.20 and 188,144,655.20

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Solution

The fourth proportional to 551,638,440.80, 827,457,661.20 and 188,144,655.20 is: 282,216,982.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,638,440.80 : 827,457,661.20 = 188,144,655.20 : x
  2. Step 2: Convert to fraction form
    551,638,440.80/827,457,661.20 = 188,144,655.20/x
  3. Step 3: Cross multiply
    551,638,440.80x = 827,457,661.20 × 188,144,655.20
  4. Step 4: Simplify right side
    551,638,440.80x = 155,681,736,359,072,416
  5. Step 5: Solve for x
    x = 155,681,736,359,072,416/551,638,440.80
  6. Step 6: Final answer
    x = 282,216,982.80

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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.