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Finding the Fourth Proportional to 355,721.91, 533,543.48 and 89,482.41

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Solution

The fourth proportional to 355,721.91, 533,543.48 and 89,482.41 is: 134,213.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,721.91 : 533,543.48 = 89,482.41 : x
  2. Step 2: Convert to fraction form
    355,721.91/533,543.48 = 89,482.41/x
  3. Step 3: Cross multiply
    355,721.91x = 533,543.48 × 89,482.41
  4. Step 4: Simplify right side
    355,721.91x = 47,742,756,430.19
  5. Step 5: Solve for x
    x = 47,742,756,430.19/355,721.91
  6. Step 6: Final answer
    x = 134,213.71

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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.