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Finding the Fourth Proportional to 93,448.89, 128,920.41 and 61,191.45

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Solution

The fourth proportional to 93,448.89, 128,920.41 and 61,191.45 is: 84,418.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,448.89 : 128,920.41 = 61,191.45 : x
  2. Step 2: Convert to fraction form
    93,448.89/128,920.41 = 61,191.45/x
  3. Step 3: Cross multiply
    93,448.89x = 128,920.41 × 61,191.45
  4. Step 4: Simplify right side
    93,448.89x = 7,888,826,822.49
  5. Step 5: Solve for x
    x = 7,888,826,822.49/93,448.89
  6. Step 6: Final answer
    x = 84,418.63

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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.