Home / 28,996,869.15-40,014,911.79-15,765,628.50

Finding the Fourth Proportional to 28,996,869.15, 40,014,911.79 and 15,765,628.50

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Solution

The fourth proportional to 28,996,869.15, 40,014,911.79 and 15,765,628.50 is: 21,756,149.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,996,869.15 : 40,014,911.79 = 15,765,628.50 : x
  2. Step 2: Convert to fraction form
    28,996,869.15/40,014,911.79 = 15,765,628.50/x
  3. Step 3: Cross multiply
    28,996,869.15x = 40,014,911.79 × 15,765,628.50
  4. Step 4: Simplify right side
    28,996,869.15x = 630,860,233,741,410
  5. Step 5: Solve for x
    x = 630,860,233,741,410/28,996,869.15
  6. Step 6: Final answer
    x = 21,756,149.96

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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.