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Finding the Fourth Proportional to 70,443.90, 105,490.55 and 49,284.95

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Solution

The fourth proportional to 70,443.90, 105,490.55 and 49,284.95 is: 73,804.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,443.90 : 105,490.55 = 49,284.95 : x
  2. Step 2: Convert to fraction form
    70,443.90/105,490.55 = 49,284.95/x
  3. Step 3: Cross multiply
    70,443.90x = 105,490.55 × 49,284.95
  4. Step 4: Simplify right side
    70,443.90x = 5,199,096,077.98
  5. Step 5: Solve for x
    x = 5,199,096,077.98/70,443.90
  6. Step 6: Final answer
    x = 73,804.77

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1.5x scale

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.