Home / 18,792,128.20-28,190,816.70-8,009,343.40

Finding the Fourth Proportional to 18,792,128.20, 28,190,816.70 and 8,009,343.40

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Solution

The fourth proportional to 18,792,128.20, 28,190,816.70 and 8,009,343.40 is: 12,015,133.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792,128.20 : 28,190,816.70 = 8,009,343.40 : x
  2. Step 2: Convert to fraction form
    18,792,128.20/28,190,816.70 = 8,009,343.40/x
  3. Step 3: Cross multiply
    18,792,128.20x = 28,190,816.70 × 8,009,343.40
  4. Step 4: Simplify right side
    18,792,128.20x = 225,789,931,676,754.78
  5. Step 5: Solve for x
    x = 225,789,931,676,754.78/18,792,128.20
  6. Step 6: Final answer
    x = 12,015,133.64

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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.