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Finding the Fourth Proportional to 612,689,636.94, 914,255,830.86 and 546,656,847.36

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Solution

The fourth proportional to 612,689,636.94, 914,255,830.86 and 546,656,847.36 is: 815,721,664.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,689,636.94 : 914,255,830.86 = 546,656,847.36 : x
  2. Step 2: Convert to fraction form
    612,689,636.94/914,255,830.86 = 546,656,847.36/x
  3. Step 3: Cross multiply
    612,689,636.94x = 914,255,830.86 × 546,656,847.36
  4. Step 4: Simplify right side
    612,689,636.94x = 499,784,210,178,425,024
  5. Step 5: Solve for x
    x = 499,784,210,178,425,024/612,689,636.94
  6. Step 6: Final answer
    x = 815,721,664.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.