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Finding the Fourth Proportional to 73,031.48, 109,547.22 and 28,679.12

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Solution

The fourth proportional to 73,031.48, 109,547.22 and 28,679.12 is: 43,018.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,031.48 : 109,547.22 = 28,679.12 : x
  2. Step 2: Convert to fraction form
    73,031.48/109,547.22 = 28,679.12/x
  3. Step 3: Cross multiply
    73,031.48x = 109,547.22 × 28,679.12
  4. Step 4: Simplify right side
    73,031.48x = 3,141,717,868.05
  5. Step 5: Solve for x
    x = 3,141,717,868.05/73,031.48
  6. Step 6: Final answer
    x = 43,018.68

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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.