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Finding the Fourth Proportional to 655,648,603.20, 983,472,904.80 and 618,025,204.80

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Solution

The fourth proportional to 655,648,603.20, 983,472,904.80 and 618,025,204.80 is: 927,037,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,648,603.20 : 983,472,904.80 = 618,025,204.80 : x
  2. Step 2: Convert to fraction form
    655,648,603.20/983,472,904.80 = 618,025,204.80/x
  3. Step 3: Cross multiply
    655,648,603.20x = 983,472,904.80 × 618,025,204.80
  4. Step 4: Simplify right side
    655,648,603.20x = 607,811,043,404,270,848
  5. Step 5: Solve for x
    x = 607,811,043,404,270,848/655,648,603.20
  6. Step 6: Final answer
    x = 927,037,807.20

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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.