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Finding the Fourth Proportional to 96,703.80, 145,055.70 and 61,274.40

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Solution

The fourth proportional to 96,703.80, 145,055.70 and 61,274.40 is: 91,911.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,703.80 : 145,055.70 = 61,274.40 : x
  2. Step 2: Convert to fraction form
    96,703.80/145,055.70 = 61,274.40/x
  3. Step 3: Cross multiply
    96,703.80x = 145,055.70 × 61,274.40
  4. Step 4: Simplify right side
    96,703.80x = 8,888,200,984.08
  5. Step 5: Solve for x
    x = 8,888,200,984.08/96,703.80
  6. Step 6: Final answer
    x = 91,911.60

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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.