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Finding the Fourth Proportional to 4,971,812.80, 7,461,655.80 and 1,940,630.80

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Solution

The fourth proportional to 4,971,812.80, 7,461,655.80 and 1,940,630.80 is: 2,912,482.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,971,812.80 : 7,461,655.80 = 1,940,630.80 : x
  2. Step 2: Convert to fraction form
    4,971,812.80/7,461,655.80 = 1,940,630.80/x
  3. Step 3: Cross multiply
    4,971,812.80x = 7,461,655.80 × 1,940,630.80
  4. Step 4: Simplify right side
    4,971,812.80x = 14,480,319,064,478.64
  5. Step 5: Solve for x
    x = 14,480,319,064,478.64/4,971,812.80
  6. Step 6: Final answer
    x = 2,912,482.76

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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.