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Finding the Fourth Proportional to 3,118,798.66, 4,303,978.05 and 1,829,660.98

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Solution

The fourth proportional to 3,118,798.66, 4,303,978.05 and 1,829,660.98 is: 2,524,953.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118,798.66 : 4,303,978.05 = 1,829,660.98 : x
  2. Step 2: Convert to fraction form
    3,118,798.66/4,303,978.05 = 1,829,660.98/x
  3. Step 3: Cross multiply
    3,118,798.66x = 4,303,978.05 × 1,829,660.98
  4. Step 4: Simplify right side
    3,118,798.66x = 7,874,820,696,861.49
  5. Step 5: Solve for x
    x = 7,874,820,696,861.49/3,118,798.66
  6. Step 6: Final answer
    x = 2,524,953.21

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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.