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Finding the Fourth Proportional to 104,425.55, 144,107.42 and 56,678.92

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Solution

The fourth proportional to 104,425.55, 144,107.42 and 56,678.92 is: 78,217.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,425.55 : 144,107.42 = 56,678.92 : x
  2. Step 2: Convert to fraction form
    104,425.55/144,107.42 = 56,678.92/x
  3. Step 3: Cross multiply
    104,425.55x = 144,107.42 × 56,678.92
  4. Step 4: Simplify right side
    104,425.55x = 8,167,852,929.59
  5. Step 5: Solve for x
    x = 8,167,852,929.59/104,425.55
  6. Step 6: Final answer
    x = 78,217.00

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1.5x scale

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.