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Finding the Fourth Proportional to 1,137,960.72, 1,710,396 and 760,222.08

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Solution

The fourth proportional to 1,137,960.72, 1,710,396 and 760,222.08 is: 1,142,641.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137,960.72 : 1,710,396 = 760,222.08 : x
  2. Step 2: Convert to fraction form
    1,137,960.72/1,710,396 = 760,222.08/x
  3. Step 3: Cross multiply
    1,137,960.72x = 1,710,396 × 760,222.08
  4. Step 4: Simplify right side
    1,137,960.72x = 1,300,280,804,743.68
  5. Step 5: Solve for x
    x = 1,300,280,804,743.68/1,137,960.72
  6. Step 6: Final answer
    x = 1,142,641.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.