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Finding the Fourth Proportional to 718,934.60, 992,447.94 and 464,409.80

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Solution

The fourth proportional to 718,934.60, 992,447.94 and 464,409.80 is: 641,091.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,934.60 : 992,447.94 = 464,409.80 : x
  2. Step 2: Convert to fraction form
    718,934.60/992,447.94 = 464,409.80/x
  3. Step 3: Cross multiply
    718,934.60x = 992,447.94 × 464,409.80
  4. Step 4: Simplify right side
    718,934.60x = 460,902,549,325.81
  5. Step 5: Solve for x
    x = 460,902,549,325.81/718,934.60
  6. Step 6: Final answer
    x = 641,091.07

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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.