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Finding the Fourth Proportional to 495,061.70, 742,592.55 and 317,914.70

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Solution

The fourth proportional to 495,061.70, 742,592.55 and 317,914.70 is: 476,872.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,061.70 : 742,592.55 = 317,914.70 : x
  2. Step 2: Convert to fraction form
    495,061.70/742,592.55 = 317,914.70/x
  3. Step 3: Cross multiply
    495,061.70x = 742,592.55 × 317,914.70
  4. Step 4: Simplify right side
    495,061.70x = 236,081,087,755.49
  5. Step 5: Solve for x
    x = 236,081,087,755.49/495,061.70
  6. Step 6: Final answer
    x = 476,872.05

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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.