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Finding the Fourth Proportional to 1,225,528, 1,691,204.34 and 681,652.12

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Solution

The fourth proportional to 1,225,528, 1,691,204.34 and 681,652.12 is: 940,666.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,528 : 1,691,204.34 = 681,652.12 : x
  2. Step 2: Convert to fraction form
    1,225,528/1,691,204.34 = 681,652.12/x
  3. Step 3: Cross multiply
    1,225,528x = 1,691,204.34 × 681,652.12
  4. Step 4: Simplify right side
    1,225,528x = 1,152,813,023,714.20
  5. Step 5: Solve for x
    x = 1,152,813,023,714.20/1,225,528
  6. Step 6: Final answer
    x = 940,666.41

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.