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Finding the Fourth Proportional to 111,077.61, 153,283.28 and 63,346.32

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Solution

The fourth proportional to 111,077.61, 153,283.28 and 63,346.32 is: 87,415.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,077.61 : 153,283.28 = 63,346.32 : x
  2. Step 2: Convert to fraction form
    111,077.61/153,283.28 = 63,346.32/x
  3. Step 3: Cross multiply
    111,077.61x = 153,283.28 × 63,346.32
  4. Step 4: Simplify right side
    111,077.61x = 9,709,930,939.11
  5. Step 5: Solve for x
    x = 9,709,930,939.11/111,077.61
  6. Step 6: Final answer
    x = 87,415.74

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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.