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Finding the Fourth Proportional to 607,003.90, 911,056.65 and 307,692.70

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Solution

The fourth proportional to 607,003.90, 911,056.65 and 307,692.70 is: 461,818.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,003.90 : 911,056.65 = 307,692.70 : x
  2. Step 2: Convert to fraction form
    607,003.90/911,056.65 = 307,692.70/x
  3. Step 3: Cross multiply
    607,003.90x = 911,056.65 × 307,692.70
  4. Step 4: Simplify right side
    607,003.90x = 280,325,480,491.46
  5. Step 5: Solve for x
    x = 280,325,480,491.46/607,003.90
  6. Step 6: Final answer
    x = 461,818.25

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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.