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Finding the Fourth Proportional to 144,571.50, 216,831.12 and 39,365.85

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Solution

The fourth proportional to 144,571.50, 216,831.12 and 39,365.85 is: 59,041.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,571.50 : 216,831.12 = 39,365.85 : x
  2. Step 2: Convert to fraction form
    144,571.50/216,831.12 = 39,365.85/x
  3. Step 3: Cross multiply
    144,571.50x = 216,831.12 × 39,365.85
  4. Step 4: Simplify right side
    144,571.50x = 8,535,741,345.25
  5. Step 5: Solve for x
    x = 8,535,741,345.25/144,571.50
  6. Step 6: Final answer
    x = 59,041.66

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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.