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Finding the Fourth Proportional to 891,870,386.80, 1,337,805,580.20 and 891,870,386.80

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Solution

The fourth proportional to 891,870,386.80, 1,337,805,580.20 and 891,870,386.80 is: 1,337,805,580.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,870,386.80 : 1,337,805,580.20 = 891,870,386.80 : x
  2. Step 2: Convert to fraction form
    891,870,386.80/1,337,805,580.20 = 891,870,386.80/x
  3. Step 3: Cross multiply
    891,870,386.80x = 1,337,805,580.20 × 891,870,386.80
  4. Step 4: Simplify right side
    891,870,386.80x = 1,193,149,180,276,172,288
  5. Step 5: Solve for x
    x = 1,193,149,180,276,172,288/891,870,386.80
  6. Step 6: Final answer
    x = 1,337,805,580.20

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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.