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Finding the Fourth Proportional to 265,413.78, 398,291.95 and 96,920.01

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Solution

The fourth proportional to 265,413.78, 398,291.95 and 96,920.01 is: 145,442.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,413.78 : 398,291.95 = 96,920.01 : x
  2. Step 2: Convert to fraction form
    265,413.78/398,291.95 = 96,920.01/x
  3. Step 3: Cross multiply
    265,413.78x = 398,291.95 × 96,920.01
  4. Step 4: Simplify right side
    265,413.78x = 38,602,459,776.92
  5. Step 5: Solve for x
    x = 38,602,459,776.92/265,413.78
  6. Step 6: Final answer
    x = 145,442.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.