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Finding the Fourth Proportional to 403,709.40, 604,397.70 and 246,245.40

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Solution

The fourth proportional to 403,709.40, 604,397.70 and 246,245.40 is: 368,656.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,709.40 : 604,397.70 = 246,245.40 : x
  2. Step 2: Convert to fraction form
    403,709.40/604,397.70 = 246,245.40/x
  3. Step 3: Cross multiply
    403,709.40x = 604,397.70 × 246,245.40
  4. Step 4: Simplify right side
    403,709.40x = 148,830,153,395.58
  5. Step 5: Solve for x
    x = 148,830,153,395.58/403,709.40
  6. Step 6: Final answer
    x = 368,656.65

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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.