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Finding the Fourth Proportional to 100,866.80, 151,300.20 and 65,615.60

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Solution

The fourth proportional to 100,866.80, 151,300.20 and 65,615.60 is: 98,423.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,866.80 : 151,300.20 = 65,615.60 : x
  2. Step 2: Convert to fraction form
    100,866.80/151,300.20 = 65,615.60/x
  3. Step 3: Cross multiply
    100,866.80x = 151,300.20 × 65,615.60
  4. Step 4: Simplify right side
    100,866.80x = 9,927,653,403.12
  5. Step 5: Solve for x
    x = 9,927,653,403.12/100,866.80
  6. Step 6: Final answer
    x = 98,423.40

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1.5x scale

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.