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Finding the Fourth Proportional to 698,714.58, 964,105.98 and 392,748.51

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Solution

The fourth proportional to 698,714.58, 964,105.98 and 392,748.51 is: 541,925.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,714.58 : 964,105.98 = 392,748.51 : x
  2. Step 2: Convert to fraction form
    698,714.58/964,105.98 = 392,748.51/x
  3. Step 3: Cross multiply
    698,714.58x = 964,105.98 × 392,748.51
  4. Step 4: Simplify right side
    698,714.58x = 378,651,187,127.09
  5. Step 5: Solve for x
    x = 378,651,187,127.09/698,714.58
  6. Step 6: Final answer
    x = 541,925.41

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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.