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Finding the Fourth Proportional to 72,535,278.70, 108,802,918.05 and 72,535,278.70

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Solution

The fourth proportional to 72,535,278.70, 108,802,918.05 and 72,535,278.70 is: 108,802,918.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,535,278.70 : 108,802,918.05 = 72,535,278.70 : x
  2. Step 2: Convert to fraction form
    72,535,278.70/108,802,918.05 = 72,535,278.70/x
  3. Step 3: Cross multiply
    72,535,278.70x = 108,802,918.05 × 72,535,278.70
  4. Step 4: Simplify right side
    72,535,278.70x = 7,892,049,984,130,011
  5. Step 5: Solve for x
    x = 7,892,049,984,130,011/72,535,278.70
  6. Step 6: Final answer
    x = 108,802,918.05

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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.