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Finding the Fourth Proportional to 42,350.52, 63,509.08 and 18,659.08

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Solution

The fourth proportional to 42,350.52, 63,509.08 and 18,659.08 is: 27,981.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,350.52 : 63,509.08 = 18,659.08 : x
  2. Step 2: Convert to fraction form
    42,350.52/63,509.08 = 18,659.08/x
  3. Step 3: Cross multiply
    42,350.52x = 63,509.08 × 18,659.08
  4. Step 4: Simplify right side
    42,350.52x = 1,185,021,004.45
  5. Step 5: Solve for x
    x = 1,185,021,004.45/42,350.52
  6. Step 6: Final answer
    x = 27,981.26

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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.