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Finding the Fourth Proportional to 651,859.60, 977,789.40 and 368,424.40

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Solution

The fourth proportional to 651,859.60, 977,789.40 and 368,424.40 is: 552,636.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,859.60 : 977,789.40 = 368,424.40 : x
  2. Step 2: Convert to fraction form
    651,859.60/977,789.40 = 368,424.40/x
  3. Step 3: Cross multiply
    651,859.60x = 977,789.40 × 368,424.40
  4. Step 4: Simplify right side
    651,859.60x = 360,241,473,021.36
  5. Step 5: Solve for x
    x = 360,241,473,021.36/651,859.60
  6. Step 6: Final answer
    x = 552,636.60

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Double scale
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Similar ratio
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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.