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Finding the Fourth Proportional to 674,863,222.84, 930,936,109.19 and 392,573,901.49

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Solution

The fourth proportional to 674,863,222.84, 930,936,109.19 and 392,573,901.49 is: 541,533,762.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,863,222.84 : 930,936,109.19 = 392,573,901.49 : x
  2. Step 2: Convert to fraction form
    674,863,222.84/930,936,109.19 = 392,573,901.49/x
  3. Step 3: Cross multiply
    674,863,222.84x = 930,936,109.19 × 392,573,901.49
  4. Step 4: Simplify right side
    674,863,222.84x = 365,461,220,418,348,736
  5. Step 5: Solve for x
    x = 365,461,220,418,348,736/674,863,222.84
  6. Step 6: Final answer
    x = 541,533,762.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.