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Finding the Fourth Proportional to 611,631,499.60, 917,447,249.40 and 611,631,499.60

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Solution

The fourth proportional to 611,631,499.60, 917,447,249.40 and 611,631,499.60 is: 917,447,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,631,499.60 : 917,447,249.40 = 611,631,499.60 : x
  2. Step 2: Convert to fraction form
    611,631,499.60/917,447,249.40 = 611,631,499.60/x
  3. Step 3: Cross multiply
    611,631,499.60x = 917,447,249.40 × 611,631,499.60
  4. Step 4: Simplify right side
    611,631,499.60x = 561,139,636,954,417,216
  5. Step 5: Solve for x
    x = 561,139,636,954,417,216/611,631,499.60
  6. Step 6: Final answer
    x = 917,447,249.40

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Double scale
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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.