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Finding the Fourth Proportional to 705,612.52, 973,763.94 and 403,903.72

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Solution

The fourth proportional to 705,612.52, 973,763.94 and 403,903.72 is: 557,397.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,612.52 : 973,763.94 = 403,903.72 : x
  2. Step 2: Convert to fraction form
    705,612.52/973,763.94 = 403,903.72/x
  3. Step 3: Cross multiply
    705,612.52x = 973,763.94 × 403,903.72
  4. Step 4: Simplify right side
    705,612.52x = 393,306,877,767.86
  5. Step 5: Solve for x
    x = 393,306,877,767.86/705,612.52
  6. Step 6: Final answer
    x = 557,397.82

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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.