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Finding the Fourth Proportional to 52,653.72, 78,968.94 and 15,205.63

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Solution

The fourth proportional to 52,653.72, 78,968.94 and 15,205.63 is: 22,805.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,653.72 : 78,968.94 = 15,205.63 : x
  2. Step 2: Convert to fraction form
    52,653.72/78,968.94 = 15,205.63/x
  3. Step 3: Cross multiply
    52,653.72x = 78,968.94 × 15,205.63
  4. Step 4: Simplify right side
    52,653.72x = 1,200,772,483.13
  5. Step 5: Solve for x
    x = 1,200,772,483.13/52,653.72
  6. Step 6: Final answer
    x = 22,805.08

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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.