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Finding the Fourth Proportional to 356,435.40, 534,653.10 and 107,117.40

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Solution

The fourth proportional to 356,435.40, 534,653.10 and 107,117.40 is: 160,676.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,435.40 : 534,653.10 = 107,117.40 : x
  2. Step 2: Convert to fraction form
    356,435.40/534,653.10 = 107,117.40/x
  3. Step 3: Cross multiply
    356,435.40x = 534,653.10 × 107,117.40
  4. Step 4: Simplify right side
    356,435.40x = 57,270,649,973.94
  5. Step 5: Solve for x
    x = 57,270,649,973.94/356,435.40
  6. Step 6: Final answer
    x = 160,676.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.