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Finding the Fourth Proportional to 28,554.40, 42,831.60 and 24,180.40

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Solution

The fourth proportional to 28,554.40, 42,831.60 and 24,180.40 is: 36,270.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,554.40 : 42,831.60 = 24,180.40 : x
  2. Step 2: Convert to fraction form
    28,554.40/42,831.60 = 24,180.40/x
  3. Step 3: Cross multiply
    28,554.40x = 42,831.60 × 24,180.40
  4. Step 4: Simplify right side
    28,554.40x = 1,035,685,220.64
  5. Step 5: Solve for x
    x = 1,035,685,220.64/28,554.40
  6. Step 6: Final answer
    x = 36,270.60

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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.