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Finding the Fourth Proportional to 18,693,312.30, 27,991,016.10 and 15,030,573.30

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Solution

The fourth proportional to 18,693,312.30, 27,991,016.10 and 15,030,573.30 is: 22,506,499.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693,312.30 : 27,991,016.10 = 15,030,573.30 : x
  2. Step 2: Convert to fraction form
    18,693,312.30/27,991,016.10 = 15,030,573.30/x
  3. Step 3: Cross multiply
    18,693,312.30x = 27,991,016.10 × 15,030,573.30
  4. Step 4: Simplify right side
    18,693,312.30x = 420,721,019,232,530.19
  5. Step 5: Solve for x
    x = 420,721,019,232,530.19/18,693,312.30
  6. Step 6: Final answer
    x = 22,506,499.25

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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.