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Finding the Fourth Proportional to 74,959.56, 103,477.50 and 57,055.32

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Solution

The fourth proportional to 74,959.56, 103,477.50 and 57,055.32 is: 78,761.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,959.56 : 103,477.50 = 57,055.32 : x
  2. Step 2: Convert to fraction form
    74,959.56/103,477.50 = 57,055.32/x
  3. Step 3: Cross multiply
    74,959.56x = 103,477.50 × 57,055.32
  4. Step 4: Simplify right side
    74,959.56x = 5,903,941,875.30
  5. Step 5: Solve for x
    x = 5,903,941,875.30/74,959.56
  6. Step 6: Final answer
    x = 78,761.69

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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.