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Finding the Fourth Proportional to 156,113.20, 233,824.20 and 128,465.20

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Solution

The fourth proportional to 156,113.20, 233,824.20 and 128,465.20 is: 192,413.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,113.20 : 233,824.20 = 128,465.20 : x
  2. Step 2: Convert to fraction form
    156,113.20/233,824.20 = 128,465.20/x
  3. Step 3: Cross multiply
    156,113.20x = 233,824.20 × 128,465.20
  4. Step 4: Simplify right side
    156,113.20x = 30,038,272,617.84
  5. Step 5: Solve for x
    x = 30,038,272,617.84/156,113.20
  6. Step 6: Final answer
    x = 192,413.41

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1.5x scale

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.