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Finding the Fourth Proportional to 97,066.40, 145,405.20 and 65,573.60

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Solution

The fourth proportional to 97,066.40, 145,405.20 and 65,573.60 is: 98,229.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,066.40 : 145,405.20 = 65,573.60 : x
  2. Step 2: Convert to fraction form
    97,066.40/145,405.20 = 65,573.60/x
  3. Step 3: Cross multiply
    97,066.40x = 145,405.20 × 65,573.60
  4. Step 4: Simplify right side
    97,066.40x = 9,534,742,422.72
  5. Step 5: Solve for x
    x = 9,534,742,422.72/97,066.40
  6. Step 6: Final answer
    x = 98,229.07

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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.