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Finding the Fourth Proportional to 157,903.76, 217,904.58 and 86,282.25

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Solution

The fourth proportional to 157,903.76, 217,904.58 and 86,282.25 is: 119,068.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,903.76 : 217,904.58 = 86,282.25 : x
  2. Step 2: Convert to fraction form
    157,903.76/217,904.58 = 86,282.25/x
  3. Step 3: Cross multiply
    157,903.76x = 217,904.58 × 86,282.25
  4. Step 4: Simplify right side
    157,903.76x = 18,801,296,630.56
  5. Step 5: Solve for x
    x = 18,801,296,630.56/157,903.76
  6. Step 6: Final answer
    x = 119,068.07

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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.