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Finding the Fourth Proportional to 111,371.48, 153,543.95 and 88,477.26

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Solution

The fourth proportional to 111,371.48, 153,543.95 and 88,477.26 is: 121,980.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,371.48 : 153,543.95 = 88,477.26 : x
  2. Step 2: Convert to fraction form
    111,371.48/153,543.95 = 88,477.26/x
  3. Step 3: Cross multiply
    111,371.48x = 153,543.95 × 88,477.26
  4. Step 4: Simplify right side
    111,371.48x = 13,585,147,985.58
  5. Step 5: Solve for x
    x = 13,585,147,985.58/111,371.48
  6. Step 6: Final answer
    x = 121,980.50

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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.