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Finding the Fourth Proportional to 520,156.34, 717,755.20 and 290,714.07

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Solution

The fourth proportional to 520,156.34, 717,755.20 and 290,714.07 is: 401,151.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,156.34 : 717,755.20 = 290,714.07 : x
  2. Step 2: Convert to fraction form
    520,156.34/717,755.20 = 290,714.07/x
  3. Step 3: Cross multiply
    520,156.34x = 717,755.20 × 290,714.07
  4. Step 4: Simplify right side
    520,156.34x = 208,661,535,455.66
  5. Step 5: Solve for x
    x = 208,661,535,455.66/520,156.34
  6. Step 6: Final answer
    x = 401,151.58

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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.