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Finding the Fourth Proportional to 316,027.16, 473,970.54 and 91,338.56

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Solution

The fourth proportional to 316,027.16, 473,970.54 and 91,338.56 is: 136,987.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,027.16 : 473,970.54 = 91,338.56 : x
  2. Step 2: Convert to fraction form
    316,027.16/473,970.54 = 91,338.56/x
  3. Step 3: Cross multiply
    316,027.16x = 473,970.54 × 91,338.56
  4. Step 4: Simplify right side
    316,027.16x = 43,291,786,606.02
  5. Step 5: Solve for x
    x = 43,291,786,606.02/316,027.16
  6. Step 6: Final answer
    x = 136,987.55

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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.