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Finding the Fourth Proportional to 219,779,969.70, 329,669,954.55 and 56,017,409.70

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Solution

The fourth proportional to 219,779,969.70, 329,669,954.55 and 56,017,409.70 is: 84,026,114.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,779,969.70 : 329,669,954.55 = 56,017,409.70 : x
  2. Step 2: Convert to fraction form
    219,779,969.70/329,669,954.55 = 56,017,409.70/x
  3. Step 3: Cross multiply
    219,779,969.70x = 329,669,954.55 × 56,017,409.70
  4. Step 4: Simplify right side
    219,779,969.70x = 18,467,256,909,807,732
  5. Step 5: Solve for x
    x = 18,467,256,909,807,732/219,779,969.70
  6. Step 6: Final answer
    x = 84,026,114.55

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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.