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Finding the Fourth Proportional to 82,811,901.60, 124,217,852.40 and 82,811,901.60

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Solution

The fourth proportional to 82,811,901.60, 124,217,852.40 and 82,811,901.60 is: 124,217,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,811,901.60 : 124,217,852.40 = 82,811,901.60 : x
  2. Step 2: Convert to fraction form
    82,811,901.60/124,217,852.40 = 82,811,901.60/x
  3. Step 3: Cross multiply
    82,811,901.60x = 124,217,852.40 × 82,811,901.60
  4. Step 4: Simplify right side
    82,811,901.60x = 10,286,716,569,912,124
  5. Step 5: Solve for x
    x = 10,286,716,569,912,124/82,811,901.60
  6. Step 6: Final answer
    x = 124,217,852.40

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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.