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Finding the Fourth Proportional to 893,509.86, 1,233,051.78 and 485,612.76

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Solution

The fourth proportional to 893,509.86, 1,233,051.78 and 485,612.76 is: 670,150.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,509.86 : 1,233,051.78 = 485,612.76 : x
  2. Step 2: Convert to fraction form
    893,509.86/1,233,051.78 = 485,612.76/x
  3. Step 3: Cross multiply
    893,509.86x = 1,233,051.78 × 485,612.76
  4. Step 4: Simplify right side
    893,509.86x = 598,785,678,108.71
  5. Step 5: Solve for x
    x = 598,785,678,108.71/893,509.86
  6. Step 6: Final answer
    x = 670,150.05

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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.