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Finding the Fourth Proportional to 1,416,528, 1,954,808.64 and 780,624

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Solution

The fourth proportional to 1,416,528, 1,954,808.64 and 780,624 is: 1,077,261.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416,528 : 1,954,808.64 = 780,624 : x
  2. Step 2: Convert to fraction form
    1,416,528/1,954,808.64 = 780,624/x
  3. Step 3: Cross multiply
    1,416,528x = 1,954,808.64 × 780,624
  4. Step 4: Simplify right side
    1,416,528x = 1,525,970,539,791.36
  5. Step 5: Solve for x
    x = 1,525,970,539,791.36/1,416,528
  6. Step 6: Final answer
    x = 1,077,261.12

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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.