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Finding the Fourth Proportional to 972,061.20, 1,357,736.40 and 972,061.20

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Solution

The fourth proportional to 972,061.20, 1,357,736.40 and 972,061.20 is: 1,357,736.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    972,061.20 : 1,357,736.40 = 972,061.20 : x
  2. Step 2: Convert to fraction form
    972,061.20/1,357,736.40 = 972,061.20/x
  3. Step 3: Cross multiply
    972,061.20x = 1,357,736.40 × 972,061.20
  4. Step 4: Simplify right side
    972,061.20x = 1,319,802,874,267.68
  5. Step 5: Solve for x
    x = 1,319,802,874,267.68/972,061.20
  6. Step 6: Final answer
    x = 1,357,736.40

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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.