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Finding the Fourth Proportional to 783,611.10, 1,175,416.65 and 744,903.90

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Solution

The fourth proportional to 783,611.10, 1,175,416.65 and 744,903.90 is: 1,117,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,611.10 : 1,175,416.65 = 744,903.90 : x
  2. Step 2: Convert to fraction form
    783,611.10/1,175,416.65 = 744,903.90/x
  3. Step 3: Cross multiply
    783,611.10x = 1,175,416.65 × 744,903.90
  4. Step 4: Simplify right side
    783,611.10x = 875,572,446,709.94
  5. Step 5: Solve for x
    x = 875,572,446,709.94/783,611.10
  6. Step 6: Final answer
    x = 1,117,355.85

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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.