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Finding the Fourth Proportional to 519,376.80, 778,220.40 and 469,610.40

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Solution

The fourth proportional to 519,376.80, 778,220.40 and 469,610.40 is: 703,651.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,376.80 : 778,220.40 = 469,610.40 : x
  2. Step 2: Convert to fraction form
    519,376.80/778,220.40 = 469,610.40/x
  3. Step 3: Cross multiply
    519,376.80x = 778,220.40 × 469,610.40
  4. Step 4: Simplify right side
    519,376.80x = 365,460,393,332.16
  5. Step 5: Solve for x
    x = 365,460,393,332.16/519,376.80
  6. Step 6: Final answer
    x = 703,651.75

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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.