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Finding the Fourth Proportional to 98,903.34, 136,475.73 and 56,453.67

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Solution

The fourth proportional to 98,903.34, 136,475.73 and 56,453.67 is: 77,899.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,903.34 : 136,475.73 = 56,453.67 : x
  2. Step 2: Convert to fraction form
    98,903.34/136,475.73 = 56,453.67/x
  3. Step 3: Cross multiply
    98,903.34x = 136,475.73 × 56,453.67
  4. Step 4: Simplify right side
    98,903.34x = 7,704,555,824.43
  5. Step 5: Solve for x
    x = 7,704,555,824.43/98,903.34
  6. Step 6: Final answer
    x = 77,899.85

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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.