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Finding the Fourth Proportional to 118,561.98, 163,675.06 and 91,643.70

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Solution

The fourth proportional to 118,561.98, 163,675.06 and 91,643.70 is: 126,514.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,561.98 : 163,675.06 = 91,643.70 : x
  2. Step 2: Convert to fraction form
    118,561.98/163,675.06 = 91,643.70/x
  3. Step 3: Cross multiply
    118,561.98x = 163,675.06 × 91,643.70
  4. Step 4: Simplify right side
    118,561.98x = 14,999,788,096.12
  5. Step 5: Solve for x
    x = 14,999,788,096.12/118,561.98
  6. Step 6: Final answer
    x = 126,514.32

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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.