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Finding the Fourth Proportional to 411,550.04, 620,409.70 and 384,116.86

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Solution

The fourth proportional to 411,550.04, 620,409.70 and 384,116.86 is: 579,054.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,550.04 : 620,409.70 = 384,116.86 : x
  2. Step 2: Convert to fraction form
    411,550.04/620,409.70 = 384,116.86/x
  3. Step 3: Cross multiply
    411,550.04x = 620,409.70 × 384,116.86
  4. Step 4: Simplify right side
    411,550.04x = 238,309,825,877.54
  5. Step 5: Solve for x
    x = 238,309,825,877.54/411,550.04
  6. Step 6: Final answer
    x = 579,054.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.