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Finding the Fourth Proportional to 551,607.41, 759,458.55 and 470,710.28

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Solution

The fourth proportional to 551,607.41, 759,458.55 and 470,710.28 is: 648,078.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,607.41 : 759,458.55 = 470,710.28 : x
  2. Step 2: Convert to fraction form
    551,607.41/759,458.55 = 470,710.28/x
  3. Step 3: Cross multiply
    551,607.41x = 759,458.55 × 470,710.28
  4. Step 4: Simplify right side
    551,607.41x = 357,484,942,921.60
  5. Step 5: Solve for x
    x = 357,484,942,921.60/551,607.41
  6. Step 6: Final answer
    x = 648,078.58

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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.