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Finding the Fourth Proportional to 403,718.40, 605,577.60 and 235,065.60

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Solution

The fourth proportional to 403,718.40, 605,577.60 and 235,065.60 is: 352,598.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,718.40 : 605,577.60 = 235,065.60 : x
  2. Step 2: Convert to fraction form
    403,718.40/605,577.60 = 235,065.60/x
  3. Step 3: Cross multiply
    403,718.40x = 605,577.60 × 235,065.60
  4. Step 4: Simplify right side
    403,718.40x = 142,350,461,890.56
  5. Step 5: Solve for x
    x = 142,350,461,890.56/403,718.40
  6. Step 6: Final answer
    x = 352,598.40

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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.