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Finding the Fourth Proportional to 858,436, 1,184,641.68 and 556,632.16

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Solution

The fourth proportional to 858,436, 1,184,641.68 and 556,632.16 is: 768,152.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,436 : 1,184,641.68 = 556,632.16 : x
  2. Step 2: Convert to fraction form
    858,436/1,184,641.68 = 556,632.16/x
  3. Step 3: Cross multiply
    858,436x = 1,184,641.68 × 556,632.16
  4. Step 4: Simplify right side
    858,436x = 659,409,657,164.43
  5. Step 5: Solve for x
    x = 659,409,657,164.43/858,436
  6. Step 6: Final answer
    x = 768,152.38

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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.