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Finding the Fourth Proportional to 692,963.34, 956,021.04 and 406,378.86

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Solution

The fourth proportional to 692,963.34, 956,021.04 and 406,378.86 is: 560,645.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,963.34 : 956,021.04 = 406,378.86 : x
  2. Step 2: Convert to fraction form
    692,963.34/956,021.04 = 406,378.86/x
  3. Step 3: Cross multiply
    692,963.34x = 956,021.04 × 406,378.86
  4. Step 4: Simplify right side
    692,963.34x = 388,506,740,371.21
  5. Step 5: Solve for x
    x = 388,506,740,371.21/692,963.34
  6. Step 6: Final answer
    x = 560,645.45

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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.