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Finding the Fourth Proportional to 348,315.50, 522,479.73 and 99,003.98

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Solution

The fourth proportional to 348,315.50, 522,479.73 and 99,003.98 is: 148,507.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,315.50 : 522,479.73 = 99,003.98 : x
  2. Step 2: Convert to fraction form
    348,315.50/522,479.73 = 99,003.98/x
  3. Step 3: Cross multiply
    348,315.50x = 522,479.73 × 99,003.98
  4. Step 4: Simplify right side
    348,315.50x = 51,727,572,986.84
  5. Step 5: Solve for x
    x = 51,727,572,986.84/348,315.50
  6. Step 6: Final answer
    x = 148,507.81

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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.