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Finding the Fourth Proportional to 910,266.90, 1,272,011.70 and 910,266.90

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Solution

The fourth proportional to 910,266.90, 1,272,011.70 and 910,266.90 is: 1,272,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,266.90 : 1,272,011.70 = 910,266.90 : x
  2. Step 2: Convert to fraction form
    910,266.90/1,272,011.70 = 910,266.90/x
  3. Step 3: Cross multiply
    910,266.90x = 1,272,011.70 × 910,266.90
  4. Step 4: Simplify right side
    910,266.90x = 1,157,870,146,922.73
  5. Step 5: Solve for x
    x = 1,157,870,146,922.73/910,266.90
  6. Step 6: Final answer
    x = 1,272,011.70

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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.