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Finding the Fourth Proportional to 210,904.26, 291,047.88 and 115,410.97

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Solution

The fourth proportional to 210,904.26, 291,047.88 and 115,410.97 is: 159,267.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,904.26 : 291,047.88 = 115,410.97 : x
  2. Step 2: Convert to fraction form
    210,904.26/291,047.88 = 115,410.97/x
  3. Step 3: Cross multiply
    210,904.26x = 291,047.88 × 115,410.97
  4. Step 4: Simplify right side
    210,904.26x = 33,590,118,147.24
  5. Step 5: Solve for x
    x = 33,590,118,147.24/210,904.26
  6. Step 6: Final answer
    x = 159,267.14

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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.