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Finding the Fourth Proportional to 926,923.40, 1,390,385.10 and 926,923.40

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Solution

The fourth proportional to 926,923.40, 1,390,385.10 and 926,923.40 is: 1,390,385.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,923.40 : 1,390,385.10 = 926,923.40 : x
  2. Step 2: Convert to fraction form
    926,923.40/1,390,385.10 = 926,923.40/x
  3. Step 3: Cross multiply
    926,923.40x = 1,390,385.10 × 926,923.40
  4. Step 4: Simplify right side
    926,923.40x = 1,288,780,484,201.34
  5. Step 5: Solve for x
    x = 1,288,780,484,201.34/926,923.40
  6. Step 6: Final answer
    x = 1,390,385.10

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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.