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Finding the Fourth Proportional to 86,608.08, 129,890.88 and 33,289.20

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Solution

The fourth proportional to 86,608.08, 129,890.88 and 33,289.20 is: 49,925.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,608.08 : 129,890.88 = 33,289.20 : x
  2. Step 2: Convert to fraction form
    86,608.08/129,890.88 = 33,289.20/x
  3. Step 3: Cross multiply
    86,608.08x = 129,890.88 × 33,289.20
  4. Step 4: Simplify right side
    86,608.08x = 4,323,963,482.50
  5. Step 5: Solve for x
    x = 4,323,963,482.50/86,608.08
  6. Step 6: Final answer
    x = 49,925.64

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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.