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Finding the Fourth Proportional to 5,221,677.92, 7,831,187.94 and 1,626,774.80

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Solution

The fourth proportional to 5,221,677.92, 7,831,187.94 and 1,626,774.80 is: 2,439,748.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221,677.92 : 7,831,187.94 = 1,626,774.80 : x
  2. Step 2: Convert to fraction form
    5,221,677.92/7,831,187.94 = 1,626,774.80/x
  3. Step 3: Cross multiply
    5,221,677.92x = 7,831,187.94 × 1,626,774.80
  4. Step 4: Simplify right side
    5,221,677.92x = 12,739,579,194,855.91
  5. Step 5: Solve for x
    x = 12,739,579,194,855.91/5,221,677.92
  6. Step 6: Final answer
    x = 2,439,748.18

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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.