Home / 28,991,025-40,006,594.71-15,938,189.28

Finding the Fourth Proportional to 28,991,025, 40,006,594.71 and 15,938,189.28

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Solution

The fourth proportional to 28,991,025, 40,006,594.71 and 15,938,189.28 is: 21,994,140.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991,025 : 40,006,594.71 = 15,938,189.28 : x
  2. Step 2: Convert to fraction form
    28,991,025/40,006,594.71 = 15,938,189.28/x
  3. Step 3: Cross multiply
    28,991,025x = 40,006,594.71 × 15,938,189.28
  4. Step 4: Simplify right side
    28,991,025x = 637,632,678,936,226.75
  5. Step 5: Solve for x
    x = 637,632,678,936,226.75/28,991,025
  6. Step 6: Final answer
    x = 21,994,140.56

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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.