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Finding the Fourth Proportional to 519,771.40, 779,684.74 and 164,813.40

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Solution

The fourth proportional to 519,771.40, 779,684.74 and 164,813.40 is: 247,228.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,771.40 : 779,684.74 = 164,813.40 : x
  2. Step 2: Convert to fraction form
    519,771.40/779,684.74 = 164,813.40/x
  3. Step 3: Cross multiply
    519,771.40x = 779,684.74 × 164,813.40
  4. Step 4: Simplify right side
    519,771.40x = 128,502,492,515.48
  5. Step 5: Solve for x
    x = 128,502,492,515.48/519,771.40
  6. Step 6: Final answer
    x = 247,228.86

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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.