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Finding the Fourth Proportional to 411,550.92, 620,411.01 and 384,117.75

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Solution

The fourth proportional to 411,550.92, 620,411.01 and 384,117.75 is: 579,055.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,550.92 : 620,411.01 = 384,117.75 : x
  2. Step 2: Convert to fraction form
    411,550.92/620,411.01 = 384,117.75/x
  3. Step 3: Cross multiply
    411,550.92x = 620,411.01 × 384,117.75
  4. Step 4: Simplify right side
    411,550.92x = 238,310,881,236.43
  5. Step 5: Solve for x
    x = 238,310,881,236.43/411,550.92
  6. Step 6: Final answer
    x = 579,055.64

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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.