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Finding the Fourth Proportional to 483,656.51, 725,483.88 and 128,670.52

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Solution

The fourth proportional to 483,656.51, 725,483.88 and 128,670.52 is: 193,005.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,656.51 : 725,483.88 = 128,670.52 : x
  2. Step 2: Convert to fraction form
    483,656.51/725,483.88 = 128,670.52/x
  3. Step 3: Cross multiply
    483,656.51x = 725,483.88 × 128,670.52
  4. Step 4: Simplify right side
    483,656.51x = 93,348,386,277.51
  5. Step 5: Solve for x
    x = 93,348,386,277.51/483,656.51
  6. Step 6: Final answer
    x = 193,005.54

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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.