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Finding the Fourth Proportional to 116,173.12, 160,309.28 and 65,178.88

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Solution

The fourth proportional to 116,173.12, 160,309.28 and 65,178.88 is: 89,941.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,173.12 : 160,309.28 = 65,178.88 : x
  2. Step 2: Convert to fraction form
    116,173.12/160,309.28 = 65,178.88/x
  3. Step 3: Cross multiply
    116,173.12x = 160,309.28 × 65,178.88
  4. Step 4: Simplify right side
    116,173.12x = 10,448,779,324.01
  5. Step 5: Solve for x
    x = 10,448,779,324.01/116,173.12
  6. Step 6: Final answer
    x = 89,941.45

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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.