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Finding the Fourth Proportional to 690,613.19, 953,193.17 and 464,127.47

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Solution

The fourth proportional to 690,613.19, 953,193.17 and 464,127.47 is: 640,594.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,613.19 : 953,193.17 = 464,127.47 : x
  2. Step 2: Convert to fraction form
    690,613.19/953,193.17 = 464,127.47/x
  3. Step 3: Cross multiply
    690,613.19x = 953,193.17 × 464,127.47
  4. Step 4: Simplify right side
    690,613.19x = 442,403,131,771.49
  5. Step 5: Solve for x
    x = 442,403,131,771.49/690,613.19
  6. Step 6: Final answer
    x = 640,594.68

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Double scale
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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.