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Finding the Fourth Proportional to 693,013.68, 956,374.56 and 406,740.24

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Solution

The fourth proportional to 693,013.68, 956,374.56 and 406,740.24 is: 561,310.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,013.68 : 956,374.56 = 406,740.24 : x
  2. Step 2: Convert to fraction form
    693,013.68/956,374.56 = 406,740.24/x
  3. Step 3: Cross multiply
    693,013.68x = 956,374.56 × 406,740.24
  4. Step 4: Simplify right side
    693,013.68x = 388,996,018,064.29
  5. Step 5: Solve for x
    x = 388,996,018,064.29/693,013.68
  6. Step 6: Final answer
    x = 561,310.73

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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.