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Finding the Fourth Proportional to 366,018.48, 549,011.55 and 99,779.01

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Solution

The fourth proportional to 366,018.48, 549,011.55 and 99,779.01 is: 149,664.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,018.48 : 549,011.55 = 99,779.01 : x
  2. Step 2: Convert to fraction form
    366,018.48/549,011.55 = 99,779.01/x
  3. Step 3: Cross multiply
    366,018.48x = 549,011.55 × 99,779.01
  4. Step 4: Simplify right side
    366,018.48x = 54,779,828,937.57
  5. Step 5: Solve for x
    x = 54,779,828,937.57/366,018.48
  6. Step 6: Final answer
    x = 149,664.11

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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.