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Finding the Fourth Proportional to 356,886.72, 535,356 and 107,588.16

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Solution

The fourth proportional to 356,886.72, 535,356 and 107,588.16 is: 161,390.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,886.72 : 535,356 = 107,588.16 : x
  2. Step 2: Convert to fraction form
    356,886.72/535,356 = 107,588.16/x
  3. Step 3: Cross multiply
    356,886.72x = 535,356 × 107,588.16
  4. Step 4: Simplify right side
    356,886.72x = 57,597,966,984.96
  5. Step 5: Solve for x
    x = 57,597,966,984.96/356,886.72
  6. Step 6: Final answer
    x = 161,390.05

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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.