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Finding the Fourth Proportional to 440,178, 607,445.64 and 238,974

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Solution

The fourth proportional to 440,178, 607,445.64 and 238,974 is: 329,784.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,178 : 607,445.64 = 238,974 : x
  2. Step 2: Convert to fraction form
    440,178/607,445.64 = 238,974/x
  3. Step 3: Cross multiply
    440,178x = 607,445.64 × 238,974
  4. Step 4: Simplify right side
    440,178x = 145,163,714,373.36
  5. Step 5: Solve for x
    x = 145,163,714,373.36/440,178
  6. Step 6: Final answer
    x = 329,784.12

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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.