Home / 8,391,000.30-12,586,500.45-7,445,438.70

Finding the Fourth Proportional to 8,391,000.30, 12,586,500.45 and 7,445,438.70

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Solution

The fourth proportional to 8,391,000.30, 12,586,500.45 and 7,445,438.70 is: 11,168,158.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391,000.30 : 12,586,500.45 = 7,445,438.70 : x
  2. Step 2: Convert to fraction form
    8,391,000.30/12,586,500.45 = 7,445,438.70/x
  3. Step 3: Cross multiply
    8,391,000.30x = 12,586,500.45 × 7,445,438.70
  4. Step 4: Simplify right side
    8,391,000.30x = 93,712,017,547,997.41
  5. Step 5: Solve for x
    x = 93,712,017,547,997.41/8,391,000.30
  6. Step 6: Final answer
    x = 11,168,158.05

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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.