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Finding the Fourth Proportional to 105,554.01, 145,663.38 and 57,804.51

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Solution

The fourth proportional to 105,554.01, 145,663.38 and 57,804.51 is: 79,769.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,554.01 : 145,663.38 = 57,804.51 : x
  2. Step 2: Convert to fraction form
    105,554.01/145,663.38 = 57,804.51/x
  3. Step 3: Cross multiply
    105,554.01x = 145,663.38 × 57,804.51
  4. Step 4: Simplify right side
    105,554.01x = 8,420,000,305.84
  5. Step 5: Solve for x
    x = 8,420,000,305.84/105,554.01
  6. Step 6: Final answer
    x = 79,769.59

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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.