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Finding the Fourth Proportional to 111,835, 154,332.30 and 61,534

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Solution

The fourth proportional to 111,835, 154,332.30 and 61,534 is: 84,916.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,835 : 154,332.30 = 61,534 : x
  2. Step 2: Convert to fraction form
    111,835/154,332.30 = 61,534/x
  3. Step 3: Cross multiply
    111,835x = 154,332.30 × 61,534
  4. Step 4: Simplify right side
    111,835x = 9,496,683,748.20
  5. Step 5: Solve for x
    x = 9,496,683,748.20/111,835
  6. Step 6: Final answer
    x = 84,916.92

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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.