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Finding the Fourth Proportional to 826,521.60, 1,239,897.60 and 353,203.20

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Solution

The fourth proportional to 826,521.60, 1,239,897.60 and 353,203.20 is: 529,854.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,521.60 : 1,239,897.60 = 353,203.20 : x
  2. Step 2: Convert to fraction form
    826,521.60/1,239,897.60 = 353,203.20/x
  3. Step 3: Cross multiply
    826,521.60x = 1,239,897.60 × 353,203.20
  4. Step 4: Simplify right side
    826,521.60x = 437,935,799,992.32
  5. Step 5: Solve for x
    x = 437,935,799,992.32/826,521.60
  6. Step 6: Final answer
    x = 529,854.03

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Double scale
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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.