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Finding the Fourth Proportional to 822,602.40, 1,234,364.40 and 349,207.20

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Solution

The fourth proportional to 822,602.40, 1,234,364.40 and 349,207.20 is: 524,006.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,602.40 : 1,234,364.40 = 349,207.20 : x
  2. Step 2: Convert to fraction form
    822,602.40/1,234,364.40 = 349,207.20/x
  3. Step 3: Cross multiply
    822,602.40x = 1,234,364.40 × 349,207.20
  4. Step 4: Simplify right side
    822,602.40x = 431,048,935,903.68
  5. Step 5: Solve for x
    x = 431,048,935,903.68/822,602.40
  6. Step 6: Final answer
    x = 524,006.42

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1.5x scale

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.