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Finding the Fourth Proportional to 693,775.55, 957,417.41 and 387,868.93

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Solution

The fourth proportional to 693,775.55, 957,417.41 and 387,868.93 is: 535,263.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,775.55 : 957,417.41 = 387,868.93 : x
  2. Step 2: Convert to fraction form
    693,775.55/957,417.41 = 387,868.93/x
  3. Step 3: Cross multiply
    693,775.55x = 957,417.41 × 387,868.93
  4. Step 4: Simplify right side
    693,775.55x = 371,352,464,956.20
  5. Step 5: Solve for x
    x = 371,352,464,956.20/693,775.55
  6. Step 6: Final answer
    x = 535,263.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.