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Finding the Fourth Proportional to 556,038.40, 767,333.76 and 301,389.52

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Solution

The fourth proportional to 556,038.40, 767,333.76 and 301,389.52 is: 415,917.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,038.40 : 767,333.76 = 301,389.52 : x
  2. Step 2: Convert to fraction form
    556,038.40/767,333.76 = 301,389.52/x
  3. Step 3: Cross multiply
    556,038.40x = 767,333.76 × 301,389.52
  4. Step 4: Simplify right side
    556,038.40x = 231,266,353,606.20
  5. Step 5: Solve for x
    x = 231,266,353,606.20/556,038.40
  6. Step 6: Final answer
    x = 415,917.95

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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.