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Finding the Fourth Proportional to 381,385.17, 526,413.63 and 238,058.91

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Solution

The fourth proportional to 381,385.17, 526,413.63 and 238,058.91 is: 328,585.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,385.17 : 526,413.63 = 238,058.91 : x
  2. Step 2: Convert to fraction form
    381,385.17/526,413.63 = 238,058.91/x
  3. Step 3: Cross multiply
    381,385.17x = 526,413.63 × 238,058.91
  4. Step 4: Simplify right side
    381,385.17x = 125,317,454,966.94
  5. Step 5: Solve for x
    x = 125,317,454,966.94/381,385.17
  6. Step 6: Final answer
    x = 328,585.02

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1.5x scale

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.