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Finding the Fourth Proportional to 12,894,193.80, 19,341,290.70 and 12,894,193.80

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Solution

The fourth proportional to 12,894,193.80, 19,341,290.70 and 12,894,193.80 is: 19,341,290.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,894,193.80 : 19,341,290.70 = 12,894,193.80 : x
  2. Step 2: Convert to fraction form
    12,894,193.80/19,341,290.70 = 12,894,193.80/x
  3. Step 3: Cross multiply
    12,894,193.80x = 19,341,290.70 × 12,894,193.80
  4. Step 4: Simplify right side
    12,894,193.80x = 249,390,350,627,937.66
  5. Step 5: Solve for x
    x = 249,390,350,627,937.66/12,894,193.80
  6. Step 6: Final answer
    x = 19,341,290.70

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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.