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Finding the Fourth Proportional to 70,616.72, 105,925.05 and 18,026.19

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Solution

The fourth proportional to 70,616.72, 105,925.05 and 18,026.19 is: 27,039.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,616.72 : 105,925.05 = 18,026.19 : x
  2. Step 2: Convert to fraction form
    70,616.72/105,925.05 = 18,026.19/x
  3. Step 3: Cross multiply
    70,616.72x = 105,925.05 × 18,026.19
  4. Step 4: Simplify right side
    70,616.72x = 1,909,425,077.06
  5. Step 5: Solve for x
    x = 1,909,425,077.06/70,616.72
  6. Step 6: Final answer
    x = 27,039.28

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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.