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Finding the Fourth Proportional to 519,528.40, 777,980.40 and 414,552.40

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Solution

The fourth proportional to 519,528.40, 777,980.40 and 414,552.40 is: 620,781.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,528.40 : 777,980.40 = 414,552.40 : x
  2. Step 2: Convert to fraction form
    519,528.40/777,980.40 = 414,552.40/x
  3. Step 3: Cross multiply
    519,528.40x = 777,980.40 × 414,552.40
  4. Step 4: Simplify right side
    519,528.40x = 322,513,641,972.96
  5. Step 5: Solve for x
    x = 322,513,641,972.96/519,528.40
  6. Step 6: Final answer
    x = 620,781.54

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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.