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Finding the Fourth Proportional to 158,453.00, 218,666.87 and 86,831.48

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Solution

The fourth proportional to 158,453.00, 218,666.87 and 86,831.48 is: 119,828.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,453.00 : 218,666.87 = 86,831.48 : x
  2. Step 2: Convert to fraction form
    158,453.00/218,666.87 = 86,831.48/x
  3. Step 3: Cross multiply
    158,453.00x = 218,666.87 × 86,831.48
  4. Step 4: Simplify right side
    158,453.00x = 18,987,168,061.58
  5. Step 5: Solve for x
    x = 18,987,168,061.58/158,453.00
  6. Step 6: Final answer
    x = 119,828.39

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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.