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Finding the Fourth Proportional to 353,407.41, 530,156.66 and 128,733.21

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Solution

The fourth proportional to 353,407.41, 530,156.66 and 128,733.21 is: 193,116.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,407.41 : 530,156.66 = 128,733.21 : x
  2. Step 2: Convert to fraction form
    353,407.41/530,156.66 = 128,733.21/x
  3. Step 3: Cross multiply
    353,407.41x = 530,156.66 × 128,733.21
  4. Step 4: Simplify right side
    353,407.41x = 68,248,768,001.01
  5. Step 5: Solve for x
    x = 68,248,768,001.01/353,407.41
  6. Step 6: Final answer
    x = 193,116.40

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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.