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Finding the Fourth Proportional to 539,181.42, 808,875.81 and 206,731.50

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Solution

The fourth proportional to 539,181.42, 808,875.81 and 206,731.50 is: 310,137.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,181.42 : 808,875.81 = 206,731.50 : x
  2. Step 2: Convert to fraction form
    539,181.42/808,875.81 = 206,731.50/x
  3. Step 3: Cross multiply
    539,181.42x = 808,875.81 × 206,731.50
  4. Step 4: Simplify right side
    539,181.42x = 167,220,109,515.02
  5. Step 5: Solve for x
    x = 167,220,109,515.02/539,181.42
  6. Step 6: Final answer
    x = 310,137.00

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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.