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Finding the Fourth Proportional to 157,040.20, 216,742.98 and 93,413.80

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Solution

The fourth proportional to 157,040.20, 216,742.98 and 93,413.80 is: 128,927.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,040.20 : 216,742.98 = 93,413.80 : x
  2. Step 2: Convert to fraction form
    157,040.20/216,742.98 = 93,413.80/x
  3. Step 3: Cross multiply
    157,040.20x = 216,742.98 × 93,413.80
  4. Step 4: Simplify right side
    157,040.20x = 20,246,785,385.12
  5. Step 5: Solve for x
    x = 20,246,785,385.12/157,040.20
  6. Step 6: Final answer
    x = 128,927.40

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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.