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Finding the Fourth Proportional to 97,208.40, 145,812.60 and 83,211.60

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Solution

The fourth proportional to 97,208.40, 145,812.60 and 83,211.60 is: 124,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,208.40 : 145,812.60 = 83,211.60 : x
  2. Step 2: Convert to fraction form
    97,208.40/145,812.60 = 83,211.60/x
  3. Step 3: Cross multiply
    97,208.40x = 145,812.60 × 83,211.60
  4. Step 4: Simplify right side
    97,208.40x = 12,133,299,746.16
  5. Step 5: Solve for x
    x = 12,133,299,746.16/97,208.40
  6. Step 6: Final answer
    x = 124,817.40

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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.