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Finding the Fourth Proportional to 141,603.67, 195,405.65 and 77,929.30

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Solution

The fourth proportional to 141,603.67, 195,405.65 and 77,929.30 is: 107,538.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,603.67 : 195,405.65 = 77,929.30 : x
  2. Step 2: Convert to fraction form
    141,603.67/195,405.65 = 77,929.30/x
  3. Step 3: Cross multiply
    141,603.67x = 195,405.65 × 77,929.30
  4. Step 4: Simplify right side
    141,603.67x = 15,227,825,130.90
  5. Step 5: Solve for x
    x = 15,227,825,130.90/141,603.67
  6. Step 6: Final answer
    x = 107,538.35

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1.5x scale

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.