Home / 99,720,234.80-149,580,352.20-65,680,017.20

Finding the Fourth Proportional to 99,720,234.80, 149,580,352.20 and 65,680,017.20

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Solution

The fourth proportional to 99,720,234.80, 149,580,352.20 and 65,680,017.20 is: 98,520,025.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,720,234.80 : 149,580,352.20 = 65,680,017.20 : x
  2. Step 2: Convert to fraction form
    99,720,234.80/149,580,352.20 = 65,680,017.20/x
  3. Step 3: Cross multiply
    99,720,234.80x = 149,580,352.20 × 65,680,017.20
  4. Step 4: Simplify right side
    99,720,234.80x = 9,824,440,105,278,058
  5. Step 5: Solve for x
    x = 9,824,440,105,278,058/99,720,234.80
  6. Step 6: Final answer
    x = 98,520,025.80

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1.5x scale

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.