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Finding the Fourth Proportional to 352,307.82, 528,460.30 and 127,615.66

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Solution

The fourth proportional to 352,307.82, 528,460.30 and 127,615.66 is: 191,422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,307.82 : 528,460.30 = 127,615.66 : x
  2. Step 2: Convert to fraction form
    352,307.82/528,460.30 = 127,615.66/x
  3. Step 3: Cross multiply
    352,307.82x = 528,460.30 × 127,615.66
  4. Step 4: Simplify right side
    352,307.82x = 67,439,812,522.40
  5. Step 5: Solve for x
    x = 67,439,812,522.40/352,307.82
  6. Step 6: Final answer
    x = 191,422.98

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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.