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Finding the Fourth Proportional to 127,043.16, 190,678.95 and 67,929.36

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Solution

The fourth proportional to 127,043.16, 190,678.95 and 67,929.36 is: 101,955.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,043.16 : 190,678.95 = 67,929.36 : x
  2. Step 2: Convert to fraction form
    127,043.16/190,678.95 = 67,929.36/x
  3. Step 3: Cross multiply
    127,043.16x = 190,678.95 × 67,929.36
  4. Step 4: Simplify right side
    127,043.16x = 12,952,699,038.97
  5. Step 5: Solve for x
    x = 12,952,699,038.97/127,043.16
  6. Step 6: Final answer
    x = 101,955.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.