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Finding the Fourth Proportional to 401,859.80, 602,570.70 and 121,340.60

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Solution

The fourth proportional to 401,859.80, 602,570.70 and 121,340.60 is: 181,944.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,859.80 : 602,570.70 = 121,340.60 : x
  2. Step 2: Convert to fraction form
    401,859.80/602,570.70 = 121,340.60/x
  3. Step 3: Cross multiply
    401,859.80x = 602,570.70 × 121,340.60
  4. Step 4: Simplify right side
    401,859.80x = 73,116,290,280.42
  5. Step 5: Solve for x
    x = 73,116,290,280.42/401,859.80
  6. Step 6: Final answer
    x = 181,944.77

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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.