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Finding the Fourth Proportional to 452,978.40, 679,465.08 and 116,018.40

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Solution

The fourth proportional to 452,978.40, 679,465.08 and 116,018.40 is: 174,026.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,978.40 : 679,465.08 = 116,018.40 : x
  2. Step 2: Convert to fraction form
    452,978.40/679,465.08 = 116,018.40/x
  3. Step 3: Cross multiply
    452,978.40x = 679,465.08 × 116,018.40
  4. Step 4: Simplify right side
    452,978.40x = 78,830,451,437.47
  5. Step 5: Solve for x
    x = 78,830,451,437.47/452,978.40
  6. Step 6: Final answer
    x = 174,026.95

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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.