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Finding the Fourth Proportional to 692,045.53, 955,023.60 and 405,565.90

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Solution

The fourth proportional to 692,045.53, 955,023.60 and 405,565.90 is: 559,681.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,045.53 : 955,023.60 = 405,565.90 : x
  2. Step 2: Convert to fraction form
    692,045.53/955,023.60 = 405,565.90/x
  3. Step 3: Cross multiply
    692,045.53x = 955,023.60 × 405,565.90
  4. Step 4: Simplify right side
    692,045.53x = 387,325,005,855.24
  5. Step 5: Solve for x
    x = 387,325,005,855.24/692,045.53
  6. Step 6: Final answer
    x = 559,681.39

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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.