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Finding the Fourth Proportional to 111,396, 153,733.77 and 61,095

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Solution

The fourth proportional to 111,396, 153,733.77 and 61,095 is: 84,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,396 : 153,733.77 = 61,095 : x
  2. Step 2: Convert to fraction form
    111,396/153,733.77 = 61,095/x
  3. Step 3: Cross multiply
    111,396x = 153,733.77 × 61,095
  4. Step 4: Simplify right side
    111,396x = 9,392,364,678.15
  5. Step 5: Solve for x
    x = 9,392,364,678.15/111,396
  6. Step 6: Final answer
    x = 84,315.10

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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.