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Finding the Fourth Proportional to 14,869,508.16, 20,519,980.53 and 8,342,711.47

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Solution

The fourth proportional to 14,869,508.16, 20,519,980.53 and 8,342,711.47 is: 11,512,975.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,869,508.16 : 20,519,980.53 = 8,342,711.47 : x
  2. Step 2: Convert to fraction form
    14,869,508.16/20,519,980.53 = 8,342,711.47/x
  3. Step 3: Cross multiply
    14,869,508.16x = 20,519,980.53 × 8,342,711.47
  4. Step 4: Simplify right side
    14,869,508.16x = 171,192,276,931,807.69
  5. Step 5: Solve for x
    x = 171,192,276,931,807.69/14,869,508.16
  6. Step 6: Final answer
    x = 11,512,975.08

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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.