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Finding the Fourth Proportional to 634,641.54, 875,676.54 and 376,405.17

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Solution

The fourth proportional to 634,641.54, 875,676.54 and 376,405.17 is: 519,362.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,641.54 : 875,676.54 = 376,405.17 : x
  2. Step 2: Convert to fraction form
    634,641.54/875,676.54 = 376,405.17/x
  3. Step 3: Cross multiply
    634,641.54x = 875,676.54 × 376,405.17
  4. Step 4: Simplify right side
    634,641.54x = 329,609,176,903.71
  5. Step 5: Solve for x
    x = 329,609,176,903.71/634,641.54
  6. Step 6: Final answer
    x = 519,362.75

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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.