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Finding the Fourth Proportional to 13,163,663.40, 19,710,065.70 and 13,163,663.40

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Solution

The fourth proportional to 13,163,663.40, 19,710,065.70 and 13,163,663.40 is: 19,710,065.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163,663.40 : 19,710,065.70 = 13,163,663.40 : x
  2. Step 2: Convert to fraction form
    13,163,663.40/19,710,065.70 = 13,163,663.40/x
  3. Step 3: Cross multiply
    13,163,663.40x = 19,710,065.70 × 13,163,663.40
  4. Step 4: Simplify right side
    13,163,663.40x = 259,456,670,466,685.38
  5. Step 5: Solve for x
    x = 259,456,670,466,685.38/13,163,663.40
  6. Step 6: Final answer
    x = 19,710,065.70

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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.