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Finding the Fourth Proportional to 158,553.61, 218,802.32 and 86,933.46

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Solution

The fourth proportional to 158,553.61, 218,802.32 and 86,933.46 is: 119,967.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,553.61 : 218,802.32 = 86,933.46 : x
  2. Step 2: Convert to fraction form
    158,553.61/218,802.32 = 86,933.46/x
  3. Step 3: Cross multiply
    158,553.61x = 218,802.32 × 86,933.46
  4. Step 4: Simplify right side
    158,553.61x = 19,021,241,204.95
  5. Step 5: Solve for x
    x = 19,021,241,204.95/158,553.61
  6. Step 6: Final answer
    x = 119,967.25

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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.