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Finding the Fourth Proportional to 634,710.85, 875,671.11 and 417,036.78

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Solution

The fourth proportional to 634,710.85, 875,671.11 and 417,036.78 is: 575,359.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,710.85 : 875,671.11 = 417,036.78 : x
  2. Step 2: Convert to fraction form
    634,710.85/875,671.11 = 417,036.78/x
  3. Step 3: Cross multiply
    634,710.85x = 875,671.11 × 417,036.78
  4. Step 4: Simplify right side
    634,710.85x = 365,187,060,053.43
  5. Step 5: Solve for x
    x = 365,187,060,053.43/634,710.85
  6. Step 6: Final answer
    x = 575,359.73

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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.