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Finding the Fourth Proportional to 74,842.76, 103,283.01 and 51,011.07

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Solution

The fourth proportional to 74,842.76, 103,283.01 and 51,011.07 is: 70,395.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,842.76 : 103,283.01 = 51,011.07 : x
  2. Step 2: Convert to fraction form
    74,842.76/103,283.01 = 51,011.07/x
  3. Step 3: Cross multiply
    74,842.76x = 103,283.01 × 51,011.07
  4. Step 4: Simplify right side
    74,842.76x = 5,268,576,852.92
  5. Step 5: Solve for x
    x = 5,268,576,852.92/74,842.76
  6. Step 6: Final answer
    x = 70,395.28

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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.