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Finding the Fourth Proportional to 70,403.90, 105,605.85 and 46,757.64

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Solution

The fourth proportional to 70,403.90, 105,605.85 and 46,757.64 is: 70,136.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,403.90 : 105,605.85 = 46,757.64 : x
  2. Step 2: Convert to fraction form
    70,403.90/105,605.85 = 46,757.64/x
  3. Step 3: Cross multiply
    70,403.90x = 105,605.85 × 46,757.64
  4. Step 4: Simplify right side
    70,403.90x = 4,937,880,316.19
  5. Step 5: Solve for x
    x = 4,937,880,316.19/70,403.90
  6. Step 6: Final answer
    x = 70,136.46

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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.