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Finding the Fourth Proportional to 738,124.30, 1,105,218.15 and 738,124.30

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Solution

The fourth proportional to 738,124.30, 1,105,218.15 and 738,124.30 is: 1,105,218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,124.30 : 1,105,218.15 = 738,124.30 : x
  2. Step 2: Convert to fraction form
    738,124.30/1,105,218.15 = 738,124.30/x
  3. Step 3: Cross multiply
    738,124.30x = 1,105,218.15 × 738,124.30
  4. Step 4: Simplify right side
    738,124.30x = 815,788,373,316.05
  5. Step 5: Solve for x
    x = 815,788,373,316.05/738,124.30
  6. Step 6: Final answer
    x = 1,105,218.15

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Double scale
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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.