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Finding the Fourth Proportional to 713,454.76, 1,069,243.26 and 398,060.20

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Solution

The fourth proportional to 713,454.76, 1,069,243.26 and 398,060.20 is: 596,566.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,454.76 : 1,069,243.26 = 398,060.20 : x
  2. Step 2: Convert to fraction form
    713,454.76/1,069,243.26 = 398,060.20/x
  3. Step 3: Cross multiply
    713,454.76x = 1,069,243.26 × 398,060.20
  4. Step 4: Simplify right side
    713,454.76x = 425,623,185,924.25
  5. Step 5: Solve for x
    x = 425,623,185,924.25/713,454.76
  6. Step 6: Final answer
    x = 596,566.47

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Double scale
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Similar ratio
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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.