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Finding the Fourth Proportional to 934,430.40, 1,311,745.50 and 934,430.40

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Solution

The fourth proportional to 934,430.40, 1,311,745.50 and 934,430.40 is: 1,311,745.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    934,430.40 : 1,311,745.50 = 934,430.40 : x
  2. Step 2: Convert to fraction form
    934,430.40/1,311,745.50 = 934,430.40/x
  3. Step 3: Cross multiply
    934,430.40x = 1,311,745.50 × 934,430.40
  4. Step 4: Simplify right side
    934,430.40x = 1,225,734,872,263.20
  5. Step 5: Solve for x
    x = 1,225,734,872,263.20/934,430.40
  6. Step 6: Final answer
    x = 1,311,745.50

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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.