Home / 191,821,020.16-287,655,792-76,784,120.32

Finding the Fourth Proportional to 191,821,020.16, 287,655,792 and 76,784,120.32

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Solution

The fourth proportional to 191,821,020.16, 287,655,792 and 76,784,120.32 is: 115,145,863.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,821,020.16 : 287,655,792 = 76,784,120.32 : x
  2. Step 2: Convert to fraction form
    191,821,020.16/287,655,792 = 76,784,120.32/x
  3. Step 3: Cross multiply
    191,821,020.16x = 287,655,792 × 76,784,120.32
  4. Step 4: Simplify right side
    191,821,020.16x = 22,087,396,943,672,892
  5. Step 5: Solve for x
    x = 22,087,396,943,672,892/191,821,020.16
  6. Step 6: Final answer
    x = 115,145,863.19

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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.