Home / 38,421,999.35-53,022,200.55-20,780,921.60

Finding the Fourth Proportional to 38,421,999.35, 53,022,200.55 and 20,780,921.60

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Solution

The fourth proportional to 38,421,999.35, 53,022,200.55 and 20,780,921.60 is: 28,677,586.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421,999.35 : 53,022,200.55 = 20,780,921.60 : x
  2. Step 2: Convert to fraction form
    38,421,999.35/53,022,200.55 = 20,780,921.60/x
  3. Step 3: Cross multiply
    38,421,999.35x = 53,022,200.55 × 20,780,921.60
  4. Step 4: Simplify right side
    38,421,999.35x = 1,101,850,192,423,915.75
  5. Step 5: Solve for x
    x = 1,101,850,192,423,915.75/38,421,999.35
  6. Step 6: Final answer
    x = 28,677,586.05

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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.