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Finding the Fourth Proportional to 153,963.48, 212,410.86 and 93,511.32

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Solution

The fourth proportional to 153,963.48, 212,410.86 and 93,511.32 is: 129,009.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,963.48 : 212,410.86 = 93,511.32 : x
  2. Step 2: Convert to fraction form
    153,963.48/212,410.86 = 93,511.32/x
  3. Step 3: Cross multiply
    153,963.48x = 212,410.86 × 93,511.32
  4. Step 4: Simplify right side
    153,963.48x = 19,862,819,900.94
  5. Step 5: Solve for x
    x = 19,862,819,900.94/153,963.48
  6. Step 6: Final answer
    x = 129,009.94

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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.