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Finding the Fourth Proportional to 5,257,686.70, 7,371,390.20 and 5,257,686.70

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Solution

The fourth proportional to 5,257,686.70, 7,371,390.20 and 5,257,686.70 is: 7,371,390.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,257,686.70 : 7,371,390.20 = 5,257,686.70 : x
  2. Step 2: Convert to fraction form
    5,257,686.70/7,371,390.20 = 5,257,686.70/x
  3. Step 3: Cross multiply
    5,257,686.70x = 7,371,390.20 × 5,257,686.70
  4. Step 4: Simplify right side
    5,257,686.70x = 38,756,460,215,050.34
  5. Step 5: Solve for x
    x = 38,756,460,215,050.34/5,257,686.70
  6. Step 6: Final answer
    x = 7,371,390.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.