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Finding the Fourth Proportional to 468,477,873.79, 698,528,494.76 and 455,606,736.34

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Solution

The fourth proportional to 468,477,873.79, 698,528,494.76 and 455,606,736.34 is: 679,336,859.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,477,873.79 : 698,528,494.76 = 455,606,736.34 : x
  2. Step 2: Convert to fraction form
    468,477,873.79/698,528,494.76 = 455,606,736.34/x
  3. Step 3: Cross multiply
    468,477,873.79x = 698,528,494.76 × 455,606,736.34
  4. Step 4: Simplify right side
    468,477,873.79x = 318,254,287,738,096,384
  5. Step 5: Solve for x
    x = 318,254,287,738,096,384/468,477,873.79
  6. Step 6: Final answer
    x = 679,336,859.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.