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Finding the Fourth Proportional to 111,130.66, 153,322.23 and 63,349.48

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Solution

The fourth proportional to 111,130.66, 153,322.23 and 63,349.48 is: 87,400.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,130.66 : 153,322.23 = 63,349.48 : x
  2. Step 2: Convert to fraction form
    111,130.66/153,322.23 = 63,349.48/x
  3. Step 3: Cross multiply
    111,130.66x = 153,322.23 × 63,349.48
  4. Step 4: Simplify right side
    111,130.66x = 9,712,883,542.94
  5. Step 5: Solve for x
    x = 9,712,883,542.94/111,130.66
  6. Step 6: Final answer
    x = 87,400.57

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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.