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Finding the Fourth Proportional to 111,830, 154,325.40 and 61,527.92

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Solution

The fourth proportional to 111,830, 154,325.40 and 61,527.92 is: 84,908.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,830 : 154,325.40 = 61,527.92 : x
  2. Step 2: Convert to fraction form
    111,830/154,325.40 = 61,527.92/x
  3. Step 3: Cross multiply
    111,830x = 154,325.40 × 61,527.92
  4. Step 4: Simplify right side
    111,830x = 9,495,320,865.17
  5. Step 5: Solve for x
    x = 9,495,320,865.17/111,830
  6. Step 6: Final answer
    x = 84,908.53

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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.