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Finding the Fourth Proportional to 887,947,642.02, 1,332,380,717.90 and 644,312,945.46

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Solution

The fourth proportional to 887,947,642.02, 1,332,380,717.90 and 644,312,945.46 is: 966,802,662.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,947,642.02 : 1,332,380,717.90 = 644,312,945.46 : x
  2. Step 2: Convert to fraction form
    887,947,642.02/1,332,380,717.90 = 644,312,945.46/x
  3. Step 3: Cross multiply
    887,947,642.02x = 1,332,380,717.90 × 644,312,945.46
  4. Step 4: Simplify right side
    887,947,642.02x = 858,470,144,824,258,432
  5. Step 5: Solve for x
    x = 858,470,144,824,258,432/887,947,642.02
  6. Step 6: Final answer
    x = 966,802,662.90

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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.