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Finding the Fourth Proportional to 668,818.56, 923,287.14 and 423,925.68

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Solution

The fourth proportional to 668,818.56, 923,287.14 and 423,925.68 is: 585,218.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,818.56 : 923,287.14 = 423,925.68 : x
  2. Step 2: Convert to fraction form
    668,818.56/923,287.14 = 423,925.68/x
  3. Step 3: Cross multiply
    668,818.56x = 923,287.14 × 423,925.68
  4. Step 4: Simplify right side
    668,818.56x = 391,405,128,659.76
  5. Step 5: Solve for x
    x = 391,405,128,659.76/668,818.56
  6. Step 6: Final answer
    x = 585,218.70

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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.