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Finding the Fourth Proportional to 1,130,653.40, 1,587,113.80 and 1,130,653.40

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Solution

The fourth proportional to 1,130,653.40, 1,587,113.80 and 1,130,653.40 is: 1,587,113.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130,653.40 : 1,587,113.80 = 1,130,653.40 : x
  2. Step 2: Convert to fraction form
    1,130,653.40/1,587,113.80 = 1,130,653.40/x
  3. Step 3: Cross multiply
    1,130,653.40x = 1,587,113.80 × 1,130,653.40
  4. Step 4: Simplify right side
    1,130,653.40x = 1,794,475,614,156.92
  5. Step 5: Solve for x
    x = 1,794,475,614,156.92/1,130,653.40
  6. Step 6: Final answer
    x = 1,587,113.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.