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Finding the Fourth Proportional to 14,689,858.19, 20,272,496.60 and 8,163,762.71

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Solution

The fourth proportional to 14,689,858.19, 20,272,496.60 and 8,163,762.71 is: 11,266,266.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,689,858.19 : 20,272,496.60 = 8,163,762.71 : x
  2. Step 2: Convert to fraction form
    14,689,858.19/20,272,496.60 = 8,163,762.71/x
  3. Step 3: Cross multiply
    14,689,858.19x = 20,272,496.60 × 8,163,762.71
  4. Step 4: Simplify right side
    14,689,858.19x = 165,499,851,781,681.81
  5. Step 5: Solve for x
    x = 165,499,851,781,681.81/14,689,858.19
  6. Step 6: Final answer
    x = 11,266,266.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.