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Finding the Fourth Proportional to 401,943.71, 602,456.93 and 161,903.90

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Solution

The fourth proportional to 401,943.71, 602,456.93 and 161,903.90 is: 242,671.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,943.71 : 602,456.93 = 161,903.90 : x
  2. Step 2: Convert to fraction form
    401,943.71/602,456.93 = 161,903.90/x
  3. Step 3: Cross multiply
    401,943.71x = 602,456.93 × 161,903.90
  4. Step 4: Simplify right side
    401,943.71x = 97,540,127,852.79
  5. Step 5: Solve for x
    x = 97,540,127,852.79/401,943.71
  6. Step 6: Final answer
    x = 242,671.11

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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.