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Finding the Fourth Proportional to 519,215.40, 778,928.40 and 294,683.40

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Solution

The fourth proportional to 519,215.40, 778,928.40 and 294,683.40 is: 442,084.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,215.40 : 778,928.40 = 294,683.40 : x
  2. Step 2: Convert to fraction form
    519,215.40/778,928.40 = 294,683.40/x
  3. Step 3: Cross multiply
    519,215.40x = 778,928.40 × 294,683.40
  4. Step 4: Simplify right side
    519,215.40x = 229,537,269,268.56
  5. Step 5: Solve for x
    x = 229,537,269,268.56/519,215.40
  6. Step 6: Final answer
    x = 442,084.86

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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.