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Finding the Fourth Proportional to 550,918.95, 760,425.62 and 357,322.47

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Solution

The fourth proportional to 550,918.95, 760,425.62 and 357,322.47 is: 493,207.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,918.95 : 760,425.62 = 357,322.47 : x
  2. Step 2: Convert to fraction form
    550,918.95/760,425.62 = 357,322.47/x
  3. Step 3: Cross multiply
    550,918.95x = 760,425.62 × 357,322.47
  4. Step 4: Simplify right side
    550,918.95x = 271,717,159,003.07
  5. Step 5: Solve for x
    x = 271,717,159,003.07/550,918.95
  6. Step 6: Final answer
    x = 493,207.14

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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.