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Finding the Fourth Proportional to 157,110.97, 216,809.59 and 85,491.19

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Solution

The fourth proportional to 157,110.97, 216,809.59 and 85,491.19 is: 117,975.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,110.97 : 216,809.59 = 85,491.19 : x
  2. Step 2: Convert to fraction form
    157,110.97/216,809.59 = 85,491.19/x
  3. Step 3: Cross multiply
    157,110.97x = 216,809.59 × 85,491.19
  4. Step 4: Simplify right side
    157,110.97x = 18,535,309,852.51
  5. Step 5: Solve for x
    x = 18,535,309,852.51/157,110.97
  6. Step 6: Final answer
    x = 117,975.91

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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.