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Finding the Fourth Proportional to 713,505.90, 1,070,258.85 and 476,961.90

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Solution

The fourth proportional to 713,505.90, 1,070,258.85 and 476,961.90 is: 715,442.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,505.90 : 1,070,258.85 = 476,961.90 : x
  2. Step 2: Convert to fraction form
    713,505.90/1,070,258.85 = 476,961.90/x
  3. Step 3: Cross multiply
    713,505.90x = 1,070,258.85 × 476,961.90
  4. Step 4: Simplify right side
    713,505.90x = 510,472,694,587.82
  5. Step 5: Solve for x
    x = 510,472,694,587.82/713,505.90
  6. Step 6: Final answer
    x = 715,442.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.