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Finding the Fourth Proportional to 411,551.04, 620,411.21 and 384,117.86

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Solution

The fourth proportional to 411,551.04, 620,411.21 and 384,117.86 is: 579,055.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,551.04 : 620,411.21 = 384,117.86 : x
  2. Step 2: Convert to fraction form
    411,551.04/620,411.21 = 384,117.86/x
  3. Step 3: Cross multiply
    411,551.04x = 620,411.21 × 384,117.86
  4. Step 4: Simplify right side
    411,551.04x = 238,311,026,305.21
  5. Step 5: Solve for x
    x = 238,311,026,305.21/411,551.04
  6. Step 6: Final answer
    x = 579,055.82

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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.