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Finding the Fourth Proportional to 526,718.51, 726,869.53 and 285,001.55

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Solution

The fourth proportional to 526,718.51, 726,869.53 and 285,001.55 is: 393,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,718.51 : 726,869.53 = 285,001.55 : x
  2. Step 2: Convert to fraction form
    526,718.51/726,869.53 = 285,001.55/x
  3. Step 3: Cross multiply
    526,718.51x = 726,869.53 × 285,001.55
  4. Step 4: Simplify right side
    526,718.51x = 207,158,942,697.77
  5. Step 5: Solve for x
    x = 207,158,942,697.77/526,718.51
  6. Step 6: Final answer
    x = 393,301.05

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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.