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Finding the Fourth Proportional to 86,153.58, 129,215.79 and 23,809.50

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Solution

The fourth proportional to 86,153.58, 129,215.79 and 23,809.50 is: 35,710.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,153.58 : 129,215.79 = 23,809.50 : x
  2. Step 2: Convert to fraction form
    86,153.58/129,215.79 = 23,809.50/x
  3. Step 3: Cross multiply
    86,153.58x = 129,215.79 × 23,809.50
  4. Step 4: Simplify right side
    86,153.58x = 3,076,563,352.01
  5. Step 5: Solve for x
    x = 3,076,563,352.01/86,153.58
  6. Step 6: Final answer
    x = 35,710.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.