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Finding the Fourth Proportional to 928,254.80, 1,302,706 and 928,254.80

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Solution

The fourth proportional to 928,254.80, 1,302,706 and 928,254.80 is: 1,302,706

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,254.80 : 1,302,706 = 928,254.80 : x
  2. Step 2: Convert to fraction form
    928,254.80/1,302,706 = 928,254.80/x
  3. Step 3: Cross multiply
    928,254.80x = 1,302,706 × 928,254.80
  4. Step 4: Simplify right side
    928,254.80x = 1,209,243,097,488.80
  5. Step 5: Solve for x
    x = 1,209,243,097,488.80/928,254.80
  6. Step 6: Final answer
    x = 1,302,706

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Double scale
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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.