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Finding the Fourth Proportional to 124,856.64, 172,310.95 and 70,413.67

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Solution

The fourth proportional to 124,856.64, 172,310.95 and 70,413.67 is: 97,175.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,856.64 : 172,310.95 = 70,413.67 : x
  2. Step 2: Convert to fraction form
    124,856.64/172,310.95 = 70,413.67/x
  3. Step 3: Cross multiply
    124,856.64x = 172,310.95 × 70,413.67
  4. Step 4: Simplify right side
    124,856.64x = 12,133,046,278.02
  5. Step 5: Solve for x
    x = 12,133,046,278.02/124,856.64
  6. Step 6: Final answer
    x = 97,175.82

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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.