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Finding the Fourth Proportional to 74,746.70, 112,120.46 and 19,342.70

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Solution

The fourth proportional to 74,746.70, 112,120.46 and 19,342.70 is: 29,014.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,746.70 : 112,120.46 = 19,342.70 : x
  2. Step 2: Convert to fraction form
    74,746.70/112,120.46 = 19,342.70/x
  3. Step 3: Cross multiply
    74,746.70x = 112,120.46 × 19,342.70
  4. Step 4: Simplify right side
    74,746.70x = 2,168,712,421.64
  5. Step 5: Solve for x
    x = 2,168,712,421.64/74,746.70
  6. Step 6: Final answer
    x = 29,014.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.