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Finding the Fourth Proportional to 885,812.40, 1,237,338 and 885,812.40

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Solution

The fourth proportional to 885,812.40, 1,237,338 and 885,812.40 is: 1,237,338

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,812.40 : 1,237,338 = 885,812.40 : x
  2. Step 2: Convert to fraction form
    885,812.40/1,237,338 = 885,812.40/x
  3. Step 3: Cross multiply
    885,812.40x = 1,237,338 × 885,812.40
  4. Step 4: Simplify right side
    885,812.40x = 1,096,049,343,391.20
  5. Step 5: Solve for x
    x = 1,096,049,343,391.20/885,812.40
  6. Step 6: Final answer
    x = 1,237,338

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.