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Finding the Fourth Proportional to 52,831.99, 72,909.98 and 28,958.64

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Solution

The fourth proportional to 52,831.99, 72,909.98 and 28,958.64 is: 39,963.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,831.99 : 72,909.98 = 28,958.64 : x
  2. Step 2: Convert to fraction form
    52,831.99/72,909.98 = 28,958.64/x
  3. Step 3: Cross multiply
    52,831.99x = 72,909.98 × 28,958.64
  4. Step 4: Simplify right side
    52,831.99x = 2,111,373,863.23
  5. Step 5: Solve for x
    x = 2,111,373,863.23/52,831.99
  6. Step 6: Final answer
    x = 39,963.93

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1.5x scale

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.