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Finding the Fourth Proportional to 487,632.12, 672,572.88 and 352,113.45

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Solution

The fourth proportional to 487,632.12, 672,572.88 and 352,113.45 is: 485,657.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,632.12 : 672,572.88 = 352,113.45 : x
  2. Step 2: Convert to fraction form
    487,632.12/672,572.88 = 352,113.45/x
  3. Step 3: Cross multiply
    487,632.12x = 672,572.88 × 352,113.45
  4. Step 4: Simplify right side
    487,632.12x = 236,821,957,153.24
  5. Step 5: Solve for x
    x = 236,821,957,153.24/487,632.12
  6. Step 6: Final answer
    x = 485,657.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.