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Finding the Fourth Proportional to 66,703.40, 99,943.98 and 46,940.40

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Solution

The fourth proportional to 66,703.40, 99,943.98 and 46,940.40 is: 70,332.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,703.40 : 99,943.98 = 46,940.40 : x
  2. Step 2: Convert to fraction form
    66,703.40/99,943.98 = 46,940.40/x
  3. Step 3: Cross multiply
    66,703.40x = 99,943.98 × 46,940.40
  4. Step 4: Simplify right side
    66,703.40x = 4,691,410,398.79
  5. Step 5: Solve for x
    x = 4,691,410,398.79/66,703.40
  6. Step 6: Final answer
    x = 70,332.40

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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.