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Finding the Fourth Proportional to 116,807.40, 161,197.53 and 65,820.60

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Solution

The fourth proportional to 116,807.40, 161,197.53 and 65,820.60 is: 90,834.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,807.40 : 161,197.53 = 65,820.60 : x
  2. Step 2: Convert to fraction form
    116,807.40/161,197.53 = 65,820.60/x
  3. Step 3: Cross multiply
    116,807.40x = 161,197.53 × 65,820.60
  4. Step 4: Simplify right side
    116,807.40x = 10,610,118,143.12
  5. Step 5: Solve for x
    x = 10,610,118,143.12/116,807.40
  6. Step 6: Final answer
    x = 90,834.30

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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.