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Finding the Fourth Proportional to 693,316.92, 956,783.68 and 406,841.78

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Solution

The fourth proportional to 693,316.92, 956,783.68 and 406,841.78 is: 561,445.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,316.92 : 956,783.68 = 406,841.78 : x
  2. Step 2: Convert to fraction form
    693,316.92/956,783.68 = 406,841.78/x
  3. Step 3: Cross multiply
    693,316.92x = 956,783.68 × 406,841.78
  4. Step 4: Simplify right side
    693,316.92x = 389,259,575,446.15
  5. Step 5: Solve for x
    x = 389,259,575,446.15/693,316.92
  6. Step 6: Final answer
    x = 561,445.37

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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.