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Finding the Fourth Proportional to 210,868,338.94, 316,323,435.60 and 77,956,034.42

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Solution

The fourth proportional to 210,868,338.94, 316,323,435.60 and 77,956,034.42 is: 116,941,788.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,868,338.94 : 316,323,435.60 = 77,956,034.42 : x
  2. Step 2: Convert to fraction form
    210,868,338.94/316,323,435.60 = 77,956,034.42/x
  3. Step 3: Cross multiply
    210,868,338.94x = 316,323,435.60 × 77,956,034.42
  4. Step 4: Simplify right side
    210,868,338.94x = 24,659,320,633,486,256
  5. Step 5: Solve for x
    x = 24,659,320,633,486,256/210,868,338.94
  6. Step 6: Final answer
    x = 116,941,788.21

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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.