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Finding the Fourth Proportional to 981,516.60, 1,354,484.76 and 551,798.64

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Solution

The fourth proportional to 981,516.60, 1,354,484.76 and 551,798.64 is: 761,477.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,516.60 : 1,354,484.76 = 551,798.64 : x
  2. Step 2: Convert to fraction form
    981,516.60/1,354,484.76 = 551,798.64/x
  3. Step 3: Cross multiply
    981,516.60x = 1,354,484.76 × 551,798.64
  4. Step 4: Simplify right side
    981,516.60x = 747,402,848,468.73
  5. Step 5: Solve for x
    x = 747,402,848,468.73/981,516.60
  6. Step 6: Final answer
    x = 761,477.54

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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.