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Finding the Fourth Proportional to 219,188.64, 328,776.88 and 59,280.08

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Solution

The fourth proportional to 219,188.64, 328,776.88 and 59,280.08 is: 88,918.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,188.64 : 328,776.88 = 59,280.08 : x
  2. Step 2: Convert to fraction form
    219,188.64/328,776.88 = 59,280.08/x
  3. Step 3: Cross multiply
    219,188.64x = 328,776.88 × 59,280.08
  4. Step 4: Simplify right side
    219,188.64x = 19,489,919,748.55
  5. Step 5: Solve for x
    x = 19,489,919,748.55/219,188.64
  6. Step 6: Final answer
    x = 88,918.48

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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.