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Finding the Fourth Proportional to 545,320.80, 817,653.15 and 279,600.30

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Solution

The fourth proportional to 545,320.80, 817,653.15 and 279,600.30 is: 419,232.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,320.80 : 817,653.15 = 279,600.30 : x
  2. Step 2: Convert to fraction form
    545,320.80/817,653.15 = 279,600.30/x
  3. Step 3: Cross multiply
    545,320.80x = 817,653.15 × 279,600.30
  4. Step 4: Simplify right side
    545,320.80x = 228,616,066,035.95
  5. Step 5: Solve for x
    x = 228,616,066,035.95/545,320.80
  6. Step 6: Final answer
    x = 419,232.25

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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.