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Finding the Fourth Proportional to 666,156.62, 918,715.16 and 472,180.66

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Solution

The fourth proportional to 666,156.62, 918,715.16 and 472,180.66 is: 651,197.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,156.62 : 918,715.16 = 472,180.66 : x
  2. Step 2: Convert to fraction form
    666,156.62/918,715.16 = 472,180.66/x
  3. Step 3: Cross multiply
    666,156.62x = 918,715.16 × 472,180.66
  4. Step 4: Simplify right side
    666,156.62x = 433,799,529,484.47
  5. Step 5: Solve for x
    x = 433,799,529,484.47/666,156.62
  6. Step 6: Final answer
    x = 651,197.50

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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.