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Finding the Fourth Proportional to 404,983.61, 607,467.21 and 105,457.56

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Solution

The fourth proportional to 404,983.61, 607,467.21 and 105,457.56 is: 158,184.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,983.61 : 607,467.21 = 105,457.56 : x
  2. Step 2: Convert to fraction form
    404,983.61/607,467.21 = 105,457.56/x
  3. Step 3: Cross multiply
    404,983.61x = 607,467.21 × 105,457.56
  4. Step 4: Simplify right side
    404,983.61x = 64,062,009,746.61
  5. Step 5: Solve for x
    x = 64,062,009,746.61/404,983.61
  6. Step 6: Final answer
    x = 158,184.20

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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.