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Finding the Fourth Proportional to 615,561.98, 847,595.07 and 557,825.74

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Solution

The fourth proportional to 615,561.98, 847,595.07 and 557,825.74 is: 768,095.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,561.98 : 847,595.07 = 557,825.74 : x
  2. Step 2: Convert to fraction form
    615,561.98/847,595.07 = 557,825.74/x
  3. Step 3: Cross multiply
    615,561.98x = 847,595.07 × 557,825.74
  4. Step 4: Simplify right side
    615,561.98x = 472,810,342,905.13
  5. Step 5: Solve for x
    x = 472,810,342,905.13/615,561.98
  6. Step 6: Final answer
    x = 768,095.43

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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.