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Finding the Fourth Proportional to 608,969.40, 913,511.70 and 165,737.40

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Solution

The fourth proportional to 608,969.40, 913,511.70 and 165,737.40 is: 248,621.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,969.40 : 913,511.70 = 165,737.40 : x
  2. Step 2: Convert to fraction form
    608,969.40/913,511.70 = 165,737.40/x
  3. Step 3: Cross multiply
    608,969.40x = 913,511.70 × 165,737.40
  4. Step 4: Simplify right side
    608,969.40x = 151,403,054,027.58
  5. Step 5: Solve for x
    x = 151,403,054,027.58/608,969.40
  6. Step 6: Final answer
    x = 248,621.78

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1.5x scale

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.