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Finding the Fourth Proportional to 157,874.01, 217,859.67 and 86,256.51

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Solution

The fourth proportional to 157,874.01, 217,859.67 and 86,256.51 is: 119,030.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,874.01 : 217,859.67 = 86,256.51 : x
  2. Step 2: Convert to fraction form
    157,874.01/217,859.67 = 86,256.51/x
  3. Step 3: Cross multiply
    157,874.01x = 217,859.67 × 86,256.51
  4. Step 4: Simplify right side
    157,874.01x = 18,791,814,803.95
  5. Step 5: Solve for x
    x = 18,791,814,803.95/157,874.01
  6. Step 6: Final answer
    x = 119,030.45

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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.