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Finding the Fourth Proportional to 118,430.30, 177,715.54 and 43,603.04

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Solution

The fourth proportional to 118,430.30, 177,715.54 and 43,603.04 is: 65,430.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,430.30 : 177,715.54 = 43,603.04 : x
  2. Step 2: Convert to fraction form
    118,430.30/177,715.54 = 43,603.04/x
  3. Step 3: Cross multiply
    118,430.30x = 177,715.54 × 43,603.04
  4. Step 4: Simplify right side
    118,430.30x = 7,748,937,799.24
  5. Step 5: Solve for x
    x = 7,748,937,799.24/118,430.30
  6. Step 6: Final answer
    x = 65,430.37

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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.