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Finding the Fourth Proportional to 318,881.58, 440,056.51 and 175,641.61

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Solution

The fourth proportional to 318,881.58, 440,056.51 and 175,641.61 is: 242,385.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,881.58 : 440,056.51 = 175,641.61 : x
  2. Step 2: Convert to fraction form
    318,881.58/440,056.51 = 175,641.61/x
  3. Step 3: Cross multiply
    318,881.58x = 440,056.51 × 175,641.61
  4. Step 4: Simplify right side
    318,881.58x = 77,292,233,907.38
  5. Step 5: Solve for x
    x = 77,292,233,907.38/318,881.58
  6. Step 6: Final answer
    x = 242,385.38

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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.