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Finding the Fourth Proportional to 355,515.16, 533,301.10 and 118,859.08

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Solution

The fourth proportional to 355,515.16, 533,301.10 and 118,859.08 is: 178,298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,515.16 : 533,301.10 = 118,859.08 : x
  2. Step 2: Convert to fraction form
    355,515.16/533,301.10 = 118,859.08/x
  3. Step 3: Cross multiply
    355,515.16x = 533,301.10 × 118,859.08
  4. Step 4: Simplify right side
    355,515.16x = 63,387,678,108.99
  5. Step 5: Solve for x
    x = 63,387,678,108.99/355,515.16
  6. Step 6: Final answer
    x = 178,298.10

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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.