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Finding the Fourth Proportional to 151,289.61, 208,687.53 and 93,155.73

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Solution

The fourth proportional to 151,289.61, 208,687.53 and 93,155.73 is: 128,498.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,289.61 : 208,687.53 = 93,155.73 : x
  2. Step 2: Convert to fraction form
    151,289.61/208,687.53 = 93,155.73/x
  3. Step 3: Cross multiply
    151,289.61x = 208,687.53 × 93,155.73
  4. Step 4: Simplify right side
    151,289.61x = 19,440,439,199.05
  5. Step 5: Solve for x
    x = 19,440,439,199.05/151,289.61
  6. Step 6: Final answer
    x = 128,498.18

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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.