Home / 20,155,490,066.40-30,233,235,099.60-18,686,161,989.60

Finding the Fourth Proportional to 20,155,490,066.40, 30,233,235,099.60 and 18,686,161,989.60

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Solution

The fourth proportional to 20,155,490,066.40, 30,233,235,099.60 and 18,686,161,989.60 is: 28,029,242,984.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155,490,066.40 : 30,233,235,099.60 = 18,686,161,989.60 : x
  2. Step 2: Convert to fraction form
    20,155,490,066.40/30,233,235,099.60 = 18,686,161,989.60/x
  3. Step 3: Cross multiply
    20,155,490,066.40x = 30,233,235,099.60 × 18,686,161,989.60
  4. Step 4: Simplify right side
    20,155,490,066.40x = 564,943,128,540,785,999,872
  5. Step 5: Solve for x
    x = 564,943,128,540,785,999,872/20,155,490,066.40
  6. Step 6: Final answer
    x = 28,029,242,984.40

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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.