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Finding the Fourth Proportional to 562,835.19, 776,187.78 and 521,036.16

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Solution

The fourth proportional to 562,835.19, 776,187.78 and 521,036.16 is: 718,544.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,835.19 : 776,187.78 = 521,036.16 : x
  2. Step 2: Convert to fraction form
    562,835.19/776,187.78 = 521,036.16/x
  3. Step 3: Cross multiply
    562,835.19x = 776,187.78 × 521,036.16
  4. Step 4: Simplify right side
    562,835.19x = 404,421,900,330.13
  5. Step 5: Solve for x
    x = 404,421,900,330.13/562,835.19
  6. Step 6: Final answer
    x = 718,544.09

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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.