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Finding the Fourth Proportional to 82,953.51, 124,430.75 and 20,624.01

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Solution

The fourth proportional to 82,953.51, 124,430.75 and 20,624.01 is: 30,936.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,953.51 : 124,430.75 = 20,624.01 : x
  2. Step 2: Convert to fraction form
    82,953.51/124,430.75 = 20,624.01/x
  3. Step 3: Cross multiply
    82,953.51x = 124,430.75 × 20,624.01
  4. Step 4: Simplify right side
    82,953.51x = 2,566,260,929.19
  5. Step 5: Solve for x
    x = 2,566,260,929.19/82,953.51
  6. Step 6: Final answer
    x = 30,936.13

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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.