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Finding the Fourth Proportional to 355,603.44, 533,432.70 and 118,947.36

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Solution

The fourth proportional to 355,603.44, 533,432.70 and 118,947.36 is: 178,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,603.44 : 533,432.70 = 118,947.36 : x
  2. Step 2: Convert to fraction form
    355,603.44/533,432.70 = 118,947.36/x
  3. Step 3: Cross multiply
    355,603.44x = 533,432.70 × 118,947.36
  4. Step 4: Simplify right side
    355,603.44x = 63,450,411,402.67
  5. Step 5: Solve for x
    x = 63,450,411,402.67/355,603.44
  6. Step 6: Final answer
    x = 178,430.25

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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.