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Finding the Fourth Proportional to 619,216.48, 854,436.09 and 343,569.93

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Solution

The fourth proportional to 619,216.48, 854,436.09 and 343,569.93 is: 474,080.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,216.48 : 854,436.09 = 343,569.93 : x
  2. Step 2: Convert to fraction form
    619,216.48/854,436.09 = 343,569.93/x
  3. Step 3: Cross multiply
    619,216.48x = 854,436.09 × 343,569.93
  4. Step 4: Simplify right side
    619,216.48x = 293,558,547,630.77
  5. Step 5: Solve for x
    x = 293,558,547,630.77/619,216.48
  6. Step 6: Final answer
    x = 474,080.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.