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Finding the Fourth Proportional to 515,950.01, 711,987.05 and 286,521.83

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Solution

The fourth proportional to 515,950.01, 711,987.05 and 286,521.83 is: 395,386.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,950.01 : 711,987.05 = 286,521.83 : x
  2. Step 2: Convert to fraction form
    515,950.01/711,987.05 = 286,521.83/x
  3. Step 3: Cross multiply
    515,950.01x = 711,987.05 × 286,521.83
  4. Step 4: Simplify right side
    515,950.01x = 203,999,832,328.62
  5. Step 5: Solve for x
    x = 203,999,832,328.62/515,950.01
  6. Step 6: Final answer
    x = 395,386.82

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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.