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Finding the Fourth Proportional to 692,223.68, 955,088.16 and 405,589.76

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Solution

The fourth proportional to 692,223.68, 955,088.16 and 405,589.76 is: 559,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,223.68 : 955,088.16 = 405,589.76 : x
  2. Step 2: Convert to fraction form
    692,223.68/955,088.16 = 405,589.76/x
  3. Step 3: Cross multiply
    692,223.68x = 955,088.16 × 405,589.76
  4. Step 4: Simplify right side
    692,223.68x = 387,373,977,593.24
  5. Step 5: Solve for x
    x = 387,373,977,593.24/692,223.68
  6. Step 6: Final answer
    x = 559,608.10

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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.