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Finding the Fourth Proportional to 621,000.30, 931,500.45 and 597,380.70

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Solution

The fourth proportional to 621,000.30, 931,500.45 and 597,380.70 is: 896,071.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,000.30 : 931,500.45 = 597,380.70 : x
  2. Step 2: Convert to fraction form
    621,000.30/931,500.45 = 597,380.70/x
  3. Step 3: Cross multiply
    621,000.30x = 931,500.45 × 597,380.70
  4. Step 4: Simplify right side
    621,000.30x = 556,460,390,871.32
  5. Step 5: Solve for x
    x = 556,460,390,871.32/621,000.30
  6. Step 6: Final answer
    x = 896,071.05

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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.