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Finding the Fourth Proportional to 157,835, 217,811.01 and 86,215.04

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Solution

The fourth proportional to 157,835, 217,811.01 and 86,215.04 is: 118,976.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,835 : 217,811.01 = 86,215.04 : x
  2. Step 2: Convert to fraction form
    157,835/217,811.01 = 86,215.04/x
  3. Step 3: Cross multiply
    157,835x = 217,811.01 × 86,215.04
  4. Step 4: Simplify right side
    157,835x = 18,778,584,939.59
  5. Step 5: Solve for x
    x = 18,778,584,939.59/157,835
  6. Step 6: Final answer
    x = 118,976.05

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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.