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Finding the Fourth Proportional to 553,438.58, 758,763.59 and 543,349.49

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Solution

The fourth proportional to 553,438.58, 758,763.59 and 543,349.49 is: 744,931.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,438.58 : 758,763.59 = 543,349.49 : x
  2. Step 2: Convert to fraction form
    553,438.58/758,763.59 = 543,349.49/x
  3. Step 3: Cross multiply
    553,438.58x = 758,763.59 × 543,349.49
  4. Step 4: Simplify right side
    553,438.58x = 412,273,803,146.50
  5. Step 5: Solve for x
    x = 412,273,803,146.50/553,438.58
  6. Step 6: Final answer
    x = 744,931.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.