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Finding the Fourth Proportional to 7,242,312.70, 10,863,469.05 and 7,130,338.30

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Solution

The fourth proportional to 7,242,312.70, 10,863,469.05 and 7,130,338.30 is: 10,695,507.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242,312.70 : 10,863,469.05 = 7,130,338.30 : x
  2. Step 2: Convert to fraction form
    7,242,312.70/10,863,469.05 = 7,130,338.30/x
  3. Step 3: Cross multiply
    7,242,312.70x = 10,863,469.05 × 7,130,338.30
  4. Step 4: Simplify right side
    7,242,312.70x = 77,460,209,438,079.62
  5. Step 5: Solve for x
    x = 77,460,209,438,079.62/7,242,312.70
  6. Step 6: Final answer
    x = 10,695,507.45

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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.