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Finding the Fourth Proportional to 530,866.20, 745,312.20 and 530,866.20

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Solution

The fourth proportional to 530,866.20, 745,312.20 and 530,866.20 is: 745,312.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,866.20 : 745,312.20 = 530,866.20 : x
  2. Step 2: Convert to fraction form
    530,866.20/745,312.20 = 530,866.20/x
  3. Step 3: Cross multiply
    530,866.20x = 745,312.20 × 530,866.20
  4. Step 4: Simplify right side
    530,866.20x = 395,661,055,427.64
  5. Step 5: Solve for x
    x = 395,661,055,427.64/530,866.20
  6. Step 6: Final answer
    x = 745,312.20

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1.5x scale

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.