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Finding the Fourth Proportional to 677,158.11, 934,545.06 and 386,813.13

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Solution

The fourth proportional to 677,158.11, 934,545.06 and 386,813.13 is: 533,840.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,158.11 : 934,545.06 = 386,813.13 : x
  2. Step 2: Convert to fraction form
    677,158.11/934,545.06 = 386,813.13/x
  3. Step 3: Cross multiply
    677,158.11x = 934,545.06 × 386,813.13
  4. Step 4: Simplify right side
    677,158.11x = 361,494,299,784.64
  5. Step 5: Solve for x
    x = 361,494,299,784.64/677,158.11
  6. Step 6: Final answer
    x = 533,840.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.