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Finding the Fourth Proportional to 352,047.20, 528,070.80 and 115,332.80

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Solution

The fourth proportional to 352,047.20, 528,070.80 and 115,332.80 is: 172,999.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,047.20 : 528,070.80 = 115,332.80 : x
  2. Step 2: Convert to fraction form
    352,047.20/528,070.80 = 115,332.80/x
  3. Step 3: Cross multiply
    352,047.20x = 528,070.80 × 115,332.80
  4. Step 4: Simplify right side
    352,047.20x = 60,903,883,962.24
  5. Step 5: Solve for x
    x = 60,903,883,962.24/352,047.20
  6. Step 6: Final answer
    x = 172,999.20

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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.