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Finding the Fourth Proportional to 112,057.59, 154,637.19 and 61,756.59

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Solution

The fourth proportional to 112,057.59, 154,637.19 and 61,756.59 is: 85,222.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,057.59 : 154,637.19 = 61,756.59 : x
  2. Step 2: Convert to fraction form
    112,057.59/154,637.19 = 61,756.59/x
  3. Step 3: Cross multiply
    112,057.59x = 154,637.19 × 61,756.59
  4. Step 4: Simplify right side
    112,057.59x = 9,549,865,541.58
  5. Step 5: Solve for x
    x = 9,549,865,541.58/112,057.59
  6. Step 6: Final answer
    x = 85,222.84

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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.