Home / 38,421,990.90-53,022,188.93-20,780,913.15

Finding the Fourth Proportional to 38,421,990.90, 53,022,188.93 and 20,780,913.15

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Solution

The fourth proportional to 38,421,990.90, 53,022,188.93 and 20,780,913.15 is: 28,677,574.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421,990.90 : 53,022,188.93 = 20,780,913.15 : x
  2. Step 2: Convert to fraction form
    38,421,990.90/53,022,188.93 = 20,780,913.15/x
  3. Step 3: Cross multiply
    38,421,990.90x = 53,022,188.93 × 20,780,913.15
  4. Step 4: Simplify right side
    38,421,990.90x = 1,101,849,503,073,316.75
  5. Step 5: Solve for x
    x = 1,101,849,503,073,316.75/38,421,990.90
  6. Step 6: Final answer
    x = 28,677,574.41

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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.