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Finding the Fourth Proportional to 636,826.98, 878,826.94 and 346,444.86

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Solution

The fourth proportional to 636,826.98, 878,826.94 and 346,444.86 is: 478,097.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,826.98 : 878,826.94 = 346,444.86 : x
  2. Step 2: Convert to fraction form
    636,826.98/878,826.94 = 346,444.86/x
  3. Step 3: Cross multiply
    636,826.98x = 878,826.94 × 346,444.86
  4. Step 4: Simplify right side
    636,826.98x = 304,465,076,192.53
  5. Step 5: Solve for x
    x = 304,465,076,192.53/636,826.98
  6. Step 6: Final answer
    x = 478,097.01

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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.