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Finding the Fourth Proportional to 168,171,686.40, 251,779,232.70 and 168,171,686.40

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Solution

The fourth proportional to 168,171,686.40, 251,779,232.70 and 168,171,686.40 is: 251,779,232.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,171,686.40 : 251,779,232.70 = 168,171,686.40 : x
  2. Step 2: Convert to fraction form
    168,171,686.40/251,779,232.70 = 168,171,686.40/x
  3. Step 3: Cross multiply
    168,171,686.40x = 251,779,232.70 × 168,171,686.40
  4. Step 4: Simplify right side
    168,171,686.40x = 42,342,138,163,657,024
  5. Step 5: Solve for x
    x = 42,342,138,163,657,024/168,171,686.40
  6. Step 6: Final answer
    x = 251,779,232.70

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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.