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Finding the Fourth Proportional to 60,570.69, 90,874.64 and 31,009.28

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Solution

The fourth proportional to 60,570.69, 90,874.64 and 31,009.28 is: 46,523.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,570.69 : 90,874.64 = 31,009.28 : x
  2. Step 2: Convert to fraction form
    60,570.69/90,874.64 = 31,009.28/x
  3. Step 3: Cross multiply
    60,570.69x = 90,874.64 × 31,009.28
  4. Step 4: Simplify right side
    60,570.69x = 2,817,956,779.81
  5. Step 5: Solve for x
    x = 2,817,956,779.81/60,570.69
  6. Step 6: Final answer
    x = 46,523.44

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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.