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Finding the Fourth Proportional to 118,581.60, 177,881.76 and 39,696.15

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Solution

The fourth proportional to 118,581.60, 177,881.76 and 39,696.15 is: 59,547.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,581.60 : 177,881.76 = 39,696.15 : x
  2. Step 2: Convert to fraction form
    118,581.60/177,881.76 = 39,696.15/x
  3. Step 3: Cross multiply
    118,581.60x = 177,881.76 × 39,696.15
  4. Step 4: Simplify right side
    118,581.60x = 7,061,221,027.22
  5. Step 5: Solve for x
    x = 7,061,221,027.22/118,581.60
  6. Step 6: Final answer
    x = 59,547.36

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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.