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Finding the Fourth Proportional to 7,884,799.80, 11,808,537.30 and 5,346,713.40

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Solution

The fourth proportional to 7,884,799.80, 11,808,537.30 and 5,346,713.40 is: 8,007,415.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,884,799.80 : 11,808,537.30 = 5,346,713.40 : x
  2. Step 2: Convert to fraction form
    7,884,799.80/11,808,537.30 = 5,346,713.40/x
  3. Step 3: Cross multiply
    7,884,799.80x = 11,808,537.30 × 5,346,713.40
  4. Step 4: Simplify right side
    7,884,799.80x = 63,136,864,616,309.83
  5. Step 5: Solve for x
    x = 63,136,864,616,309.83/7,884,799.80
  6. Step 6: Final answer
    x = 8,007,415.05

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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.