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Finding the Fourth Proportional to 572,684.58, 790,700.13 and 357,921.18

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Solution

The fourth proportional to 572,684.58, 790,700.13 and 357,921.18 is: 494,178.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,684.58 : 790,700.13 = 357,921.18 : x
  2. Step 2: Convert to fraction form
    572,684.58/790,700.13 = 357,921.18/x
  3. Step 3: Cross multiply
    572,684.58x = 790,700.13 × 357,921.18
  4. Step 4: Simplify right side
    572,684.58x = 283,008,323,555.75
  5. Step 5: Solve for x
    x = 283,008,323,555.75/572,684.58
  6. Step 6: Final answer
    x = 494,178.35

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Double scale
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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.