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Finding the Fourth Proportional to 890,807.04, 1,229,364 and 528,445.44

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Solution

The fourth proportional to 890,807.04, 1,229,364 and 528,445.44 is: 729,284.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,807.04 : 1,229,364 = 528,445.44 : x
  2. Step 2: Convert to fraction form
    890,807.04/1,229,364 = 528,445.44/x
  3. Step 3: Cross multiply
    890,807.04x = 1,229,364 × 528,445.44
  4. Step 4: Simplify right side
    890,807.04x = 649,651,799,900.16
  5. Step 5: Solve for x
    x = 649,651,799,900.16/890,807.04
  6. Step 6: Final answer
    x = 729,284.54

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.