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Finding the Fourth Proportional to 61,756.32, 85,214.03 and 35,920.59

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Solution

The fourth proportional to 61,756.32, 85,214.03 and 35,920.59 is: 49,564.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,756.32 : 85,214.03 = 35,920.59 : x
  2. Step 2: Convert to fraction form
    61,756.32/85,214.03 = 35,920.59/x
  3. Step 3: Cross multiply
    61,756.32x = 85,214.03 × 35,920.59
  4. Step 4: Simplify right side
    61,756.32x = 3,060,937,807.81
  5. Step 5: Solve for x
    x = 3,060,937,807.81/61,756.32
  6. Step 6: Final answer
    x = 49,564.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.