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Finding the Fourth Proportional to 266,907.76, 368,466 and 153,708.64

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Solution

The fourth proportional to 266,907.76, 368,466 and 153,708.64 is: 212,194.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,907.76 : 368,466 = 153,708.64 : x
  2. Step 2: Convert to fraction form
    266,907.76/368,466 = 153,708.64/x
  3. Step 3: Cross multiply
    266,907.76x = 368,466 × 153,708.64
  4. Step 4: Simplify right side
    266,907.76x = 56,636,407,746.24
  5. Step 5: Solve for x
    x = 56,636,407,746.24/266,907.76
  6. Step 6: Final answer
    x = 212,194.68

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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.