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Finding the Fourth Proportional to 18,806,675.60, 28,210,013.40 and 17,672,934.80

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Solution

The fourth proportional to 18,806,675.60, 28,210,013.40 and 17,672,934.80 is: 26,509,402.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806,675.60 : 28,210,013.40 = 17,672,934.80 : x
  2. Step 2: Convert to fraction form
    18,806,675.60/28,210,013.40 = 17,672,934.80/x
  3. Step 3: Cross multiply
    18,806,675.60x = 28,210,013.40 × 17,672,934.80
  4. Step 4: Simplify right side
    18,806,675.60x = 498,553,727,525,326.31
  5. Step 5: Solve for x
    x = 498,553,727,525,326.31/18,806,675.60
  6. Step 6: Final answer
    x = 26,509,402.20

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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.