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Finding the Fourth Proportional to 401,544.40, 602,405.64 and 121,041.40

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Solution

The fourth proportional to 401,544.40, 602,405.64 and 121,041.40 is: 181,588.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,544.40 : 602,405.64 = 121,041.40 : x
  2. Step 2: Convert to fraction form
    401,544.40/602,405.64 = 121,041.40/x
  3. Step 3: Cross multiply
    401,544.40x = 602,405.64 × 121,041.40
  4. Step 4: Simplify right side
    401,544.40x = 72,916,022,033.50
  5. Step 5: Solve for x
    x = 72,916,022,033.50/401,544.40
  6. Step 6: Final answer
    x = 181,588.94

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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.