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Finding the Fourth Proportional to 719,390.52, 993,156.66 and 432,981

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Solution

The fourth proportional to 719,390.52, 993,156.66 and 432,981 is: 597,753.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,390.52 : 993,156.66 = 432,981 : x
  2. Step 2: Convert to fraction form
    719,390.52/993,156.66 = 432,981/x
  3. Step 3: Cross multiply
    719,390.52x = 993,156.66 × 432,981
  4. Step 4: Simplify right side
    719,390.52x = 430,017,963,803.46
  5. Step 5: Solve for x
    x = 430,017,963,803.46/719,390.52
  6. Step 6: Final answer
    x = 597,753.17

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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.