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Finding the Fourth Proportional to 659,718.19, 909,941.66 and 605,445.65

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Solution

The fourth proportional to 659,718.19, 909,941.66 and 605,445.65 is: 835,084.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,718.19 : 909,941.66 = 605,445.65 : x
  2. Step 2: Convert to fraction form
    659,718.19/909,941.66 = 605,445.65/x
  3. Step 3: Cross multiply
    659,718.19x = 909,941.66 × 605,445.65
  4. Step 4: Simplify right side
    659,718.19x = 550,920,226,430.60
  5. Step 5: Solve for x
    x = 550,920,226,430.60/659,718.19
  6. Step 6: Final answer
    x = 835,084.19

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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.