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Finding the Fourth Proportional to 104,628.61, 144,381.32 and 56,881.54

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Solution

The fourth proportional to 104,628.61, 144,381.32 and 56,881.54 is: 78,493.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,628.61 : 144,381.32 = 56,881.54 : x
  2. Step 2: Convert to fraction form
    104,628.61/144,381.32 = 56,881.54/x
  3. Step 3: Cross multiply
    104,628.61x = 144,381.32 × 56,881.54
  4. Step 4: Simplify right side
    104,628.61x = 8,212,631,938.21
  5. Step 5: Solve for x
    x = 8,212,631,938.21/104,628.61
  6. Step 6: Final answer
    x = 78,493.18

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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.