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Finding the Fourth Proportional to 993,772.60, 1,490,658.90 and 885,945.40

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Solution

The fourth proportional to 993,772.60, 1,490,658.90 and 885,945.40 is: 1,328,918.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,772.60 : 1,490,658.90 = 885,945.40 : x
  2. Step 2: Convert to fraction form
    993,772.60/1,490,658.90 = 885,945.40/x
  3. Step 3: Cross multiply
    993,772.60x = 1,490,658.90 × 885,945.40
  4. Step 4: Simplify right side
    993,772.60x = 1,320,642,395,424.06
  5. Step 5: Solve for x
    x = 1,320,642,395,424.06/993,772.60
  6. Step 6: Final answer
    x = 1,328,918.10

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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.