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Finding the Fourth Proportional to 528,036.90, 792,055.35 and 291,840.90

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Solution

The fourth proportional to 528,036.90, 792,055.35 and 291,840.90 is: 437,761.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,036.90 : 792,055.35 = 291,840.90 : x
  2. Step 2: Convert to fraction form
    528,036.90/792,055.35 = 291,840.90/x
  3. Step 3: Cross multiply
    528,036.90x = 792,055.35 × 291,840.90
  4. Step 4: Simplify right side
    528,036.90x = 231,154,146,193.82
  5. Step 5: Solve for x
    x = 231,154,146,193.82/528,036.90
  6. Step 6: Final answer
    x = 437,761.35

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Double scale
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Similar ratio
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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.