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Finding the Fourth Proportional to 74,783.95, 103,201.94 and 42,959.00

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Solution

The fourth proportional to 74,783.95, 103,201.94 and 42,959.00 is: 59,283.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,783.95 : 103,201.94 = 42,959.00 : x
  2. Step 2: Convert to fraction form
    74,783.95/103,201.94 = 42,959.00/x
  3. Step 3: Cross multiply
    74,783.95x = 103,201.94 × 42,959.00
  4. Step 4: Simplify right side
    74,783.95x = 4,433,452,505.86
  5. Step 5: Solve for x
    x = 4,433,452,505.86/74,783.95
  6. Step 6: Final answer
    x = 59,283.48

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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.