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Finding the Fourth Proportional to 720,866,697.20, 1,081,300,045.80 and 720,866,697.20

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Solution

The fourth proportional to 720,866,697.20, 1,081,300,045.80 and 720,866,697.20 is: 1,081,300,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,866,697.20 : 1,081,300,045.80 = 720,866,697.20 : x
  2. Step 2: Convert to fraction form
    720,866,697.20/1,081,300,045.80 = 720,866,697.20/x
  3. Step 3: Cross multiply
    720,866,697.20x = 1,081,300,045.80 × 720,866,697.20
  4. Step 4: Simplify right side
    720,866,697.20x = 779,473,192,698,054,784
  5. Step 5: Solve for x
    x = 779,473,192,698,054,784/720,866,697.20
  6. Step 6: Final answer
    x = 1,081,300,045.80

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1.5x scale

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.