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Finding the Fourth Proportional to 111,373.32, 153,702.18 and 61,072.32

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Solution

The fourth proportional to 111,373.32, 153,702.18 and 61,072.32 is: 84,283.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,373.32 : 153,702.18 = 61,072.32 : x
  2. Step 2: Convert to fraction form
    111,373.32/153,702.18 = 61,072.32/x
  3. Step 3: Cross multiply
    111,373.32x = 153,702.18 × 61,072.32
  4. Step 4: Simplify right side
    111,373.32x = 9,386,948,721.66
  5. Step 5: Solve for x
    x = 9,386,948,721.66/111,373.32
  6. Step 6: Final answer
    x = 84,283.64

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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.