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Finding the Fourth Proportional to 187,641.51, 258,687.88 and 118,696.67

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Solution

The fourth proportional to 187,641.51, 258,687.88 and 118,696.67 is: 163,638.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,641.51 : 258,687.88 = 118,696.67 : x
  2. Step 2: Convert to fraction form
    187,641.51/258,687.88 = 118,696.67/x
  3. Step 3: Cross multiply
    187,641.51x = 258,687.88 × 118,696.67
  4. Step 4: Simplify right side
    187,641.51x = 30,705,389,305.26
  5. Step 5: Solve for x
    x = 30,705,389,305.26/187,641.51
  6. Step 6: Final answer
    x = 163,638.58

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1.5x scale

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.