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Finding the Fourth Proportional to 77,113.65, 106,423.22 and 43,124.93

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Solution

The fourth proportional to 77,113.65, 106,423.22 and 43,124.93 is: 59,515.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,113.65 : 106,423.22 = 43,124.93 : x
  2. Step 2: Convert to fraction form
    77,113.65/106,423.22 = 43,124.93/x
  3. Step 3: Cross multiply
    77,113.65x = 106,423.22 × 43,124.93
  4. Step 4: Simplify right side
    77,113.65x = 4,589,493,165.13
  5. Step 5: Solve for x
    x = 4,589,493,165.13/77,113.65
  6. Step 6: Final answer
    x = 59,515.96

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1.5x scale

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.