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Finding the Fourth Proportional to 74,706,813.70, 112,060,220.55 and 45,859,408.90

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Solution

The fourth proportional to 74,706,813.70, 112,060,220.55 and 45,859,408.90 is: 68,789,113.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,706,813.70 : 112,060,220.55 = 45,859,408.90 : x
  2. Step 2: Convert to fraction form
    74,706,813.70/112,060,220.55 = 45,859,408.90/x
  3. Step 3: Cross multiply
    74,706,813.70x = 112,060,220.55 × 45,859,408.90
  4. Step 4: Simplify right side
    74,706,813.70x = 5,139,015,475,626,633
  5. Step 5: Solve for x
    x = 5,139,015,475,626,633/74,706,813.70
  6. Step 6: Final answer
    x = 68,789,113.35

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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.