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Finding the Fourth Proportional to 404,591,973.84, 558,338,683.28 and 218,953,006

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Solution

The fourth proportional to 404,591,973.84, 558,338,683.28 and 218,953,006 is: 302,156,100.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,591,973.84 : 558,338,683.28 = 218,953,006 : x
  2. Step 2: Convert to fraction form
    404,591,973.84/558,338,683.28 = 218,953,006/x
  3. Step 3: Cross multiply
    404,591,973.84x = 558,338,683.28 × 218,953,006
  4. Step 4: Simplify right side
    404,591,973.84x = 122,249,933,070,237,936
  5. Step 5: Solve for x
    x = 122,249,933,070,237,936/404,591,973.84
  6. Step 6: Final answer
    x = 302,156,100.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.