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Finding the Fourth Proportional to 996,940.60, 1,495,410.90 and 930,018.40

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Solution

The fourth proportional to 996,940.60, 1,495,410.90 and 930,018.40 is: 1,395,027.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,940.60 : 1,495,410.90 = 930,018.40 : x
  2. Step 2: Convert to fraction form
    996,940.60/1,495,410.90 = 930,018.40/x
  3. Step 3: Cross multiply
    996,940.60x = 1,495,410.90 × 930,018.40
  4. Step 4: Simplify right side
    996,940.60x = 1,390,759,652,560.56
  5. Step 5: Solve for x
    x = 1,390,759,652,560.56/996,940.60
  6. Step 6: Final answer
    x = 1,395,027.60

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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.