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Finding the Fourth Proportional to 668,667.21, 922,518.59 and 439,348.01

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Solution

The fourth proportional to 668,667.21, 922,518.59 and 439,348.01 is: 606,141.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,667.21 : 922,518.59 = 439,348.01 : x
  2. Step 2: Convert to fraction form
    668,667.21/922,518.59 = 439,348.01/x
  3. Step 3: Cross multiply
    668,667.21x = 922,518.59 × 439,348.01
  4. Step 4: Simplify right side
    668,667.21x = 405,306,706,704.51
  5. Step 5: Solve for x
    x = 405,306,706,704.51/668,667.21
  6. Step 6: Final answer
    x = 606,141.14

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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.