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Finding the Fourth Proportional to 118,618.74, 177,731.19 and 83,484.59

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Solution

The fourth proportional to 118,618.74, 177,731.19 and 83,484.59 is: 125,088.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,618.74 : 177,731.19 = 83,484.59 : x
  2. Step 2: Convert to fraction form
    118,618.74/177,731.19 = 83,484.59/x
  3. Step 3: Cross multiply
    118,618.74x = 177,731.19 × 83,484.59
  4. Step 4: Simplify right side
    118,618.74x = 14,837,814,638.71
  5. Step 5: Solve for x
    x = 14,837,814,638.71/118,618.74
  6. Step 6: Final answer
    x = 125,088.28

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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.