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Finding the Fourth Proportional to 85,933.40, 128,900.10 and 46,567.40

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Solution

The fourth proportional to 85,933.40, 128,900.10 and 46,567.40 is: 69,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,933.40 : 128,900.10 = 46,567.40 : x
  2. Step 2: Convert to fraction form
    85,933.40/128,900.10 = 46,567.40/x
  3. Step 3: Cross multiply
    85,933.40x = 128,900.10 × 46,567.40
  4. Step 4: Simplify right side
    85,933.40x = 6,002,542,516.74
  5. Step 5: Solve for x
    x = 6,002,542,516.74/85,933.40
  6. Step 6: Final answer
    x = 69,851.10

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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.