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Finding the Fourth Proportional to 907,655,519.70, 1,361,483,279.55 and 778,515,356.70

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Solution

The fourth proportional to 907,655,519.70, 1,361,483,279.55 and 778,515,356.70 is: 1,167,773,035.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,655,519.70 : 1,361,483,279.55 = 778,515,356.70 : x
  2. Step 2: Convert to fraction form
    907,655,519.70/1,361,483,279.55 = 778,515,356.70/x
  3. Step 3: Cross multiply
    907,655,519.70x = 1,361,483,279.55 × 778,515,356.70
  4. Step 4: Simplify right side
    907,655,519.70x = 1,059,935,641,019,954,048
  5. Step 5: Solve for x
    x = 1,059,935,641,019,954,048/907,655,519.70
  6. Step 6: Final answer
    x = 1,167,773,035.05

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1.5x scale

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.