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Finding the Fourth Proportional to 83,973.42, 125,345.74 and 74,009.24

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Solution

The fourth proportional to 83,973.42, 125,345.74 and 74,009.24 is: 110,472.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,973.42 : 125,345.74 = 74,009.24 : x
  2. Step 2: Convert to fraction form
    83,973.42/125,345.74 = 74,009.24/x
  3. Step 3: Cross multiply
    83,973.42x = 125,345.74 × 74,009.24
  4. Step 4: Simplify right side
    83,973.42x = 9,276,742,954.64
  5. Step 5: Solve for x
    x = 9,276,742,954.64/83,973.42
  6. Step 6: Final answer
    x = 110,472.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.