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Finding the Fourth Proportional to 657,812.34, 907,783.20 and 356,006.34

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Solution

The fourth proportional to 657,812.34, 907,783.20 and 356,006.34 is: 491,289.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,812.34 : 907,783.20 = 356,006.34 : x
  2. Step 2: Convert to fraction form
    657,812.34/907,783.20 = 356,006.34/x
  3. Step 3: Cross multiply
    657,812.34x = 907,783.20 × 356,006.34
  4. Step 4: Simplify right side
    657,812.34x = 323,176,574,545.49
  5. Step 5: Solve for x
    x = 323,176,574,545.49/657,812.34
  6. Step 6: Final answer
    x = 491,289.92

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1.5x scale

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.