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Finding the Fourth Proportional to 692,979.93, 956,327.99 and 406,706.49

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Solution

The fourth proportional to 692,979.93, 956,327.99 and 406,706.49 is: 561,264.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,979.93 : 956,327.99 = 406,706.49 : x
  2. Step 2: Convert to fraction form
    692,979.93/956,327.99 = 406,706.49/x
  3. Step 3: Cross multiply
    692,979.93x = 956,327.99 × 406,706.49
  4. Step 4: Simplify right side
    692,979.93x = 388,944,798,068.12
  5. Step 5: Solve for x
    x = 388,944,798,068.12/692,979.93
  6. Step 6: Final answer
    x = 561,264.16

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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.