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Finding the Fourth Proportional to 86,796.18, 130,193.32 and 65,864.77

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Solution

The fourth proportional to 86,796.18, 130,193.32 and 65,864.77 is: 98,796.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,796.18 : 130,193.32 = 65,864.77 : x
  2. Step 2: Convert to fraction form
    86,796.18/130,193.32 = 65,864.77/x
  3. Step 3: Cross multiply
    86,796.18x = 130,193.32 × 65,864.77
  4. Step 4: Simplify right side
    86,796.18x = 8,575,153,077.34
  5. Step 5: Solve for x
    x = 8,575,153,077.34/86,796.18
  6. Step 6: Final answer
    x = 98,796.43

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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.