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Finding the Fourth Proportional to 993,649.20, 1,490,473.80 and 883,424.40

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Solution

The fourth proportional to 993,649.20, 1,490,473.80 and 883,424.40 is: 1,325,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,649.20 : 1,490,473.80 = 883,424.40 : x
  2. Step 2: Convert to fraction form
    993,649.20/1,490,473.80 = 883,424.40/x
  3. Step 3: Cross multiply
    993,649.20x = 1,490,473.80 × 883,424.40
  4. Step 4: Simplify right side
    993,649.20x = 1,316,720,922,480.72
  5. Step 5: Solve for x
    x = 1,316,720,922,480.72/993,649.20
  6. Step 6: Final answer
    x = 1,325,136.60

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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.