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Finding the Fourth Proportional to 64,205.70, 96,308.55 and 56,429.70

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Solution

The fourth proportional to 64,205.70, 96,308.55 and 56,429.70 is: 84,644.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,205.70 : 96,308.55 = 56,429.70 : x
  2. Step 2: Convert to fraction form
    64,205.70/96,308.55 = 56,429.70/x
  3. Step 3: Cross multiply
    64,205.70x = 96,308.55 × 56,429.70
  4. Step 4: Simplify right side
    64,205.70x = 5,434,662,583.94
  5. Step 5: Solve for x
    x = 5,434,662,583.94/64,205.70
  6. Step 6: Final answer
    x = 84,644.55

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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.